README.md

##Understanding Norm- and Criterion-referenced Interpretation of Assessment Results

This interactive module was designed to help clarify some of the concepts related to educational assessment. This module is part of a larger effort sponsored by the Center for Assessment to use high-fidelity and interactive Web technologies to help improve assessment literacy.

The use of explorable explanations was inspired by Bret Victor. For the visualizations, we use the D3.js library created by Mike Bostock.

-> This is a work in progress - ETA is end of July, 2015 <-

###Audience

• Students (high-school level)
• Parents
• Teachers
• School, district and state administration

###Length of module

• About 5 minutes

###Learning Objectives After completing the module, the reader should:

• understand the difference between norm- and criterion-referenced tests and score interpretation
• know the appropriate interpretations of norm-referenced scores
• know the definition of norm group
• know the appropriate interpretations of criterion-referenced scores
• know how cut scores are established
• know some of the advantages and limitations of each type of interpretation

app.js

window.addEvent('domready', setUpCritNormTangle);

var totScore = 50;
var numCorrectMary = 45;
var pctCorrectMary;

function setUpCritNormTangle () { 
  
  var element = document.getElementById("CritNormModule");
  
  var tangle = new Tangle(element, {
    initialize: function () {
      this.numCorrect = 25;
      this.numCorrectMary = numCorrectMary;

    },
    
    update: function () {
      this.pctCorrectExample = this.numCorrect/totScore * 100;
      this.pctCorrectMary = this.numCorrectMary/totScore * 100;
      pctCorrectMary = +this.pctCorrectMary;
    }
  });
}

function outputUpdate(val) {
  document.querySelector('#pctCorrectMaryInput').value = val;
}

function checkPct(form) {
  pctAnswer= +form.pctCorrectMary.value;    
  if (pctAnswer == pctCorrectMary) {
      document.getElementById("pctCorrectResult").innerHTML = "<font color=blue><b>Correct!</b></font><p>Mary scored " +numCorrectMary +" points or " +pctCorrectMary+ "% on the exam. This is Mary's <b>raw score</b> as it is based exclusively on the <u>number of correctly answered items</u> on the test.</p>"; 
      drawBulletCharts();
  } 
  else {
      document.getElementById("pctCorrectResult").innerHTML = "<font color=red><b>Not quite right, try again!</b></font>";        
  }
}

bullet_chart.js

function drawBulletCharts() {

    var width = 960,
        height = 80,
        margin = {top: 5, right: 40, bottom: 20, left: 120};
    
    var chartNumCorrect = nv.models.bulletChart()
        .width(width - margin.right - margin.left)
        .height(height - margin.top - margin.bottom);

    var chartPctCorrect = nv.models.bulletChart()
        .width(width - margin.right - margin.left)
        .height(height - margin.top - margin.bottom);
    
    
    dataNumCorrect = [
        {   "title":"Number Correct",
            "subtitle":"Points",
            "ranges":[0,50],
            "measures":[45],
            "markers":[45],
            "markerLabels":['Mary'],
            "rangeLabels":['Total Points','Minimum Points'],
            "measureLabels":['Points'] 
        }];
    dataPctCorrect = [
        {   "title":"Percent Correct",
            "subtitle":"%",
            "ranges":[0,100],
            "measures":[90],
            "markers":[90],
            "markerLabels":['Mary'],
            "rangeLabels":['Total %','Minimum %'],
            "measureLabels":['%'] 
        }     
    ];
    
    //TODO: to be consistent with other models, should be appending a g to an already made svg, not creating the svg element
    var visNumCorrect = d3.select("#chartNumCorrect").selectAll("svg")
        .data(dataNumCorrect)
        .enter().append("svg")
        .attr("class", "bullet nvd3")
        .attr("width", width)
        .attr("height", height);

    visNumCorrect.transition().duration(1000).call(chartNumCorrect);

    var visPctCorrect = d3.select("#chartPctCorrect").selectAll("svg")
        .data(dataPctCorrect)
        .enter().append("svg")
        .attr("class", "bullet nvd3")
        .attr("width", width)
        .attr("height", height);

    visPctCorrect.transition().duration(1000).call(chartPctCorrect);
   
};

BVTouchable.js

//
//  BVTouchable.js
//  ExplorableExplanations
//
//  Created by Bret Victor on 3/10/11.
//  (c) 2011 Bret Victor.  MIT open-source license.
//

(function () {

var BVTouchable = this.BVTouchable = new Class ({

	initialize: function (el, delegate) {
		this.element = el;
		this.delegate = delegate;
		this.setTouchable(true);
	},
	
	//----------------------------------------------------------------------------------
	//
	//  touches
	//

	setTouchable: function (isTouchable) {
		if (this.touchable === isTouchable) { return; }
		this.touchable = isTouchable;
		this.element.style.pointerEvents = (this.touchable || this.hoverable) ? "auto" : "none";

		if (isTouchable) {
			if (!this._mouseBound) {
				this._mouseBound = {
					mouseDown: this._mouseDown.bind(this),
					mouseMove: this._mouseMove.bind(this),
					mouseUp: this._mouseUp.bind(this),
					touchStart: this._touchStart.bind(this),
					touchMove: this._touchMove.bind(this),
					touchEnd: this._touchEnd.bind(this),
					touchCancel: this._touchCancel.bind(this)
				};
			}
			this.element.addEvent("mousedown", this._mouseBound.mouseDown);
			this.element.addEvent("touchstart", this._mouseBound.touchStart);
		}
		else {
			this.element.removeEvents("mousedown");
			this.element.removeEvents("touchstart");
		}
	},
	
	touchDidGoDown: function (touches) { this.delegate.touchDidGoDown(touches); },
	touchDidMove: function (touches) { this.delegate.touchDidMove(touches);  },
	touchDidGoUp: function (touches) { this.delegate.touchDidGoUp(touches);  },

	
	_mouseDown: function (event) {
		event.stop();
		this.element.getDocument().addEvents({
			mousemove: this._mouseBound.mouseMove,
			mouseup: this._mouseBound.mouseUp
		});
	
		this.touches = new BVTouches(event);
		this.touchDidGoDown(this.touches);
	},

	_mouseMove: function (event) {
		event.stop();
		this.touches.updateWithEvent(event);
		this.touchDidMove(this.touches);
	},

	_mouseUp: function (event) {
		event.stop();
		this.touches.updateWithEvent(event);
		this.touches.count = 0;
		this.touchDidGoUp(this.touches);
		
		delete this.touches;
		this.element.getDocument().removeEvents({
			mousemove: this._mouseBound.mouseMove,
			mouseup: this._mouseBound.mouseUp
		});
	},

	_touchStart: function (event) {
		event.stop();
		if (this.touches || event.length > 1) { this._touchCancel(event); return; }  // only-single touch for now
		
		this.element.getDocument().addEvents({
			touchmove: this._mouseBound.touchMove,
			touchend: this._mouseBound.touchEnd,
			touchcancel: this._mouseBound.touchCancel
		});
	
		this.touches = new BVTouches(event);
		this.touchDidGoDown(this.touches);
	},
	
	_touchMove: function (event) {
		event.stop();
		if (!this.touches) { return; }

		this.touches.updateWithEvent(event);
		this.touchDidMove(this.touches);
	},
	
	_touchEnd: function (event) {
		event.stop();
		if (!this.touches) { return; }

		this.touches.count = 0;
		this.touchDidGoUp(this.touches);
		
		delete this.touches;
		this.element.getDocument().removeEvents({
			touchmove: this._mouseBound.touchMove,
			touchend: this._mouseBound.touchEnd,
			touchcancel: this._mouseBound.touchCancel
		});
	},
	
	_touchCancel: function (event) {
		this._touchEnd(event);
	}

});


//====================================================================================
//
//  BVTouches
//

var BVTouches = this.BVTouches = new Class({

	initialize: function (event) {
		this.globalPoint = { x:event.page.x, y:-event.page.y };
		this.translation = { x:0, y:0 };
		this.deltaTranslation = { x:0, y:0 };
		this.count = 1;
		this.event = event;
	},
	
	updateWithEvent: function (event) {
		var dx = event.page.x - this.globalPoint.x;  // todo, transform to local coordinate space?
		var dy = -event.page.y - this.globalPoint.y;
		this.translation.x += dx;
		this.translation.y += dy;
		this.deltaTranslation.x += dx;
		this.deltaTranslation.y += dy;
		this.globalPoint.x = event.page.x;
		this.globalPoint.y = -event.page.y;
		this.event = event;
	},
	
	resetDeltaTranslation: function () {
		this.deltaTranslation.x = 0;
		this.deltaTranslation.y = 0;
	}

});


//====================================================================================

})();

chart.js

var margin = {top: 20, right: 20, bottom: 60, left: 60},
    width = 860 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;


var tipn = d3.tip()
  .attr('class', 'd3-tip')
  .offset([-10, 0])
  .html(function(d) {
    return "<span style='color:white; font-size:10px'>" + d.name + "</span>";
  });

var svgRawBar = d3.select(".normGroupGraph").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom);

var gRawBar = svgRawBar.append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

gRawBar.call(tipn);

var colors = d3.scale.category10();

gRawBar.append('g')
    .attr('class', 'x axis norm')
    .attr('transform', 'translate(0, '+ height +')');
  
gRawBar.append('g')
    .attr('class', 'y axis norm');


  function parseRow (d) {
    d.ID= d.ID;
    d.name= d.name;
    d.classID= d.classID;
    d.score= +d.score;
    d.pctRank= +d.pctRank;
    d.rank= +d.rank;

    return d;
  };


var loadData = function() {
  
  var group = document.getElementById('normgrp').selectedOptions[0].value;
  var index = document.getElementById('normgrp').selectedIndex;

  //window.alert("index:"+index)

  var dataFile = group + '.tsv';

  d3.tsv(dataFile, parseRow, function(data) {

    var ID = data.map(function(d) { return d.ID });
    var score = data.map(function(d) { return d.score });
    var pctRank = data.map(function(d) { return d.pctRank });
    var rank = data.map(function(d) { return d.rank });
    var name = data.map(function(d) { return d.name });

    var barWidth = Math.max(width / data.length,5);

    //window.alert(data.length);

    var  x = d3.scale.linear()
            .domain([0, 100])
            .range([0, width]);
    
    
    var  y = d3.scale.linear()
            .domain([0, 50])
            .range([height, 0]);

    var xNormAxis = d3.svg.axis()
      .scale(x)
      .orient('bottom');
    
    var yNormAxis = d3.svg.axis()
      .scale(y)
      .orient('left')
      .tickFormat(d3.format('.0'));
    

    var rect = gRawBar.selectAll('.barRaw')
      .data(data);

    rect.enter().append('rect');

    rect.exit().remove();
    
    rect.attr('class', 'barRaw')
      .attr("x", function(d) { return x(d.pctRank); })
      .attr("width", barWidth - 1)
      .attr("y", function(d) { return y(d.score); })
      .attr("height", function(d) { return height - y(d.score); })
      .on('mouseover', tipn.show)
      .on('mouseout', tipn.hide)
      .attr("fill",function(d){
        if (d.name == 'Mary') { return 'purple'; }
        else {return colors(index);}  
      }) 
      ;
    

    d3.select('.x.axis.norm').call(xNormAxis);
    
    d3.select('.y.axis.norm').call(yNormAxis);
    
    /* d3.select('input').on('change', function() {
      var sortByScore = function(a, b) { return b.score - a.score; };
      
      var sortByRank = function(a, b) { return d3.ascending(a.pctRank, b.pctRank); };

      var sortedRanks = data.sort(this.checked ? sortByRank : sortByScore)
                         .map(function(d) { return d.pctRank; })

      x.domain(sortedRanks)
      
      var transition = svgRawBar.transition().duration(750);
      
      var delay = function(d, i) { return i * 50; };
      
      transition.selectAll(".barRaw")
          .delay(delay)
          .attr("x", function(d) { return x(d.pctRank); });
      
      transition.select(".x.axis")
          .call(xAxis)
          .selectAll("g")
          .delay(delay);
    })
    */
  })
};

loadData()

classroom.tsv

historical.tsv

index.html

<!DOCTYPE html>
<html>

<head lang="en">
  <meta http-equiv="Content-Type" content="text/html-8">
  <title>Norm and Criterion Referencing</title> 


	<!-- D3 libraries -->
	<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
	<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>
	<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>

	<!-- Nvd3 libraries -->
	<link href="nv.d3.min.css" rel="stylesheet">
    <script src="nv.d3.min.js"></script>


    <!-- Tangle -->
    <script type="text/javascript" src="Tangle.js"></script>

    <!-- TangleKit -->
    <link rel="stylesheet" href="TangleKit.css" type="text/css">
    <script type="text/javascript" src="mootools.js"></script>
    <script type="text/javascript" src="sprintf.js"></script>
    <script type="text/javascript" src="BVTouchable.js"></script>
    <script type="text/javascript" src="TangleKit.js"></script>

	<!-- Application specific JavaScript -->
    <script type="text/javascript" src="app.js"></script>
    <script type="text/javascript" src="quiz.js"></script>
    <script src="bullet_chart.js"></script>


	
	<!-- stylesheets -->
	<link rel="stylesheet" type="text/css" href="styles.css"></link>	

</head>

<body>
  
<div id="CritNormModule">

  <center><h2>Norm-referenced and Criterion-referenced <br>Interpretation of Test Results</h2></center>

<p>Assessment results allow educators to make important decisions about students' knowledge, abilities and future educational potential. There are multiple ways to summarize and interpret assessment results. The conclusions we can reach based on the results from an assessment will depend on how we interpret these results.</p>

<p>Sometimes we want to compare students with their peers or rank-order them. When we use tests to make these types of decision we say we are making a <b>norm-referenced</b> or <b>normative</b> interpretation of test results. </p>
<p>Some tests are used to evaluate a person's mastery of a subject, usually by using cut scores to define proficiency or pass/fail decisions. When tests are used to decide if a student meets a certain pre-defined standard or criteria, we say we are making a <b>criterion-referenced</b> interpretation of test results.</p>

<p>In this interactive module we will explore the <u>concepts</u>, <u>appropriate uses</u>, and <u>limitations</u> of both norm-referenced and criterion-referenced interpretation of test results. Throughout this lesson you will be able to change score values and see how the changes you make impact the interpretation of tests results. </p>

<br>
<h3>Mary Masters Math</h3>

<p>Mary is a 9th grade student at ABC High School and she just took the final Math I exam.</p> 

<p>The results from this exam will be used to:</p>

<ul>
	<li>Determine if 9th grade students mastered Math I concepts and can move on to Math II.</li>		
	<li>Give prizes to 9th grade students who scored <u>at the 95th percentile</u> in Math I at ABC High.</li>
</ul>

<br>

<p><i>How can we use Mary's test score to decide if she can move on to Math II and if she will receive a prize for being a top performer in comparison to her schoolmates? <b>Let's find out! </b></i></p>

<br>

<p>Some details about our example:</p>
<ul>
	<li>The exam contains 50 questions and each question is worth 1 point.</li>
	<li>Each 9th grade class has a total of 20 students.</li>
	<li>The high school, ABC High, has 5 ninth grade classes for a total of <u>100</u> ninth grade students.</li>
	<li>ABC High has records from students who took this exam in the past 10 years.</li>	
</ul>

<br>
<h3>Raw Score</h3>

<p id="scoring">In order to score the exam, Mr. Smith, the math teacher, computes the grade by counting the <b>number of correct</b> answers, with no penalty for incorrect answers and then calculates the <b>percent correct</b>. For example, if Mary got <span data-var="numCorrect" class="TKAdjustableNumber" data-min="0" data-max="50"> questions</span> right out of the total 50 questions on the test, she would score <b><span data-var="pctCorrectExample" data-format="%.0f"></span>%</b> on the exam. We call the <u>number correct</u> and <u>percent correct</u> scores a <b>raw score</b> because they are based solely on the number of correctly answered items on the test without any manipulation.</p> 

<p><font color=red>Activity 1:</font> Let's assume Mary got <span data-var="numCorrectMary"> </span> correct questions on the test. What was her percent correct score? Use the slider to answer and hit submit. </p>

<form name="pctCorrectForm">
<input class="slider-width" type=range min=0 max=100 value=50 id="pctCorrectMary" step=1 oninput="outputUpdate(value)">
<output for="pctCorrectMary" id="pctCorrectMaryInput">50</output>%
<input type="button" value="Submit" onClick="checkPct(this.form)">
<p id="pctCorrectResult"> </p>
</form>

<br>

<p>[<font color=blue>Graphic 1:</font> Mary's raw score in terms of Number Correct (Points) and Percent Correct (%) - will show once the correct 'percent correct' has been selected above]</p>

<div class="gallery with-transitions" id="chartNumCorrect"></div>
<div class="gallery with-transitions" id="chartPctCorrect"></div>


<br>
<h3>Norm-referenced Scores and Interpretations</h3>

<p>You know Mary's raw score, but does this score tell you how well she did in comparison to her classmates or to all other 9th grade students in her high school? Does it tell you if she got any of the 9th grade Math prizes?</p>

<p><b>No!</b></p>
<p> In order to rank students and know how one student's score compares to other students who took the same test we must have a norm-referenced score. A norm-referenced score typically indicates the examinee's relative position in a group of test takers that we want to compare the examinee's score with. Once we have information about this group, which we call a <u>norm group</u>, we are able to answer the questions above.</p>

<p>[<font color=blue>Graphic 2:</font> Mary's raw score compared to her classmates ]</p>

<select id="rawscore" type='select' onchange='updateData();'>
   <option value='50' id='score' selected='true'>Number Correct</option>
   <option value='100' id='pctCorrect'>Percent Correct</option>   
</select>

<div class="rawScoreGraph"></div>
<script type="text/javascript" src="raw_score_chart.js"></script>

<h3>Norm Groups</h3>

<p><u>What is a <b>norm group</b>?</u></p>

<p>A <b>norm group</b> can be any group we wish to make comparisons against. In high-stakes national or state standardized tests, the norm group must be <u>representative</u> of the national or state population of students taking the same test. To be valid, group comparisons should be made between similar students (e.g., the percent of children learning English should be the same in the norm and comparison groups). </p>

<br>
<p><b>Quiz:</b> We know that the results of the Math I exam will be used to give prizes to students in the 95th percentile of ninth grade Math students at ABC High. What is the most appropriate norm group for this kind of decision?</p>

<form name="norm_group_quiz">
 <ol type="a">
  <li><input type="radio" name="q1" value="Mary's 9th grade class">Mary's 9th grade class</li>
  <li><input type="radio" name="q1" value="All ABC High's 9th grade students in the current school year">All ABC High's 9th grade students in the current school year</li>
  <li><input type="radio" name="q1" value="All ABC High's students">All ABC High's students</li>
  <li><input type="radio" name="q1" value="All current and past ABC High's 9th grade students who have taken this test">All current and past ABC High's 9th grade students who have taken this test</li>
</ol> 
<input type="button" value="Check Answer" onClick="checkAnswer(this.form)">
<p id="quizResults"> </p>
</form>


<section id="normText">

<br>
<h3>Types of Norm-referenced Scores</h3>

<p>There are different types of norm-referenced scores. The most common are:</p>

<ul>
	<li><b>Percentile ranks:</b> this is a simple way of ranking a raw score to the performance of a particular norm group. Percentiles always run from 1 to 99 and define the percent of the norm group which achieved lower scores. Each percentile table only refers to one specific norm group at the specific time it was tested. If a raw score of 15 correspond to a percentile of 30, it means that 30% of the norm group had raw scores lower than 15.  
	<br><br>
	<s> Since percentile ranks indicate various percentages of individuals above and below scores that are normally distributed, they do not represent equal units. Percentile ranks are much more compactly arranged in the middle of the normal distribution since that is where the majority of individuals fall.</s>
	</li>
	<br>
	<li><b>Standard score:</b> a transformation of the raw score, whose score distribution in a specified population has convenient, known values for the mean and standard deviation. Often this term is used to specifically denote scores transformed to have a mean of zero and a standard deviation of 1 (also known as z-scores). Standard scores permit the direct comparison of examinees by placement of the scores on a common scale and, for this reason, are useful for comparisons over time.</li>
</ul>

 </section>
<p><font color=red>Activity 3:</font> Now let's define Mary's norm group. To what group do you want to compare Mary's score to?</p>

<p>[<font color=blue>Graphic 3:</font> Selecting Norm Group (class or school)] Show Mary's placement in comparison to the class/school.</p>

<select id="normgrp" onchange="loadData()">
  <option value="classroom">classroom</option>
  <option value="school">school</option>
  <option value="historical">historical</option>
</select>

<!--<input type=checkbox value="sort">Sort</input> -->

<div class="normGroupGraph"></div>
<script type="text/javascript" src="chart.js"></script>


<p>{<u>Reactive text:</u> Mary scored <span data-var="numCorrectMary" data-format="%.0f"></span> points or <span data-var="pctCorrectMary" data-format="%.0f"></span>% on the exam. Based on the selected norm group [norm_group], she scored at the [ZZ] percentile. This means that based on her raw score Mary scored higher than [ZZ]% of the other students in her [class/school] (norm group) who took the test. In other words, [ZZ]% of the students who made up the norm group answered fewer than XX items correctly.}</p>


<br>
<h3>Criterion-referenced Scores and Interpretations</h3>

<p>You know Mary's raw score and how well she did compared to her classmates and schoolmates, but do you know if she will be able to move on to Math II?</p>

<p><b>No!</b></p>
<p> Placement decisions are usually based off a minimum score that the student must obtain to demonstrate proficiency in the subject matter. In order to make pass/fail decisions we usually make a <b>criterion-referenced interpretation of test scores</b>.</p>


<br>
<h3>Cut Scores</h3>

<p>A <b>cut score</b> is a point on the test score scale used for classifying the test takers into groups on the basis of their scores. In general, criterion-referenced tests involve a cut score, where the examinee passes if their score exceeds the cut score and fails if it does not (often called a mastery test). However, <u>the criterion is not the cut score</u>; the criterion is the domain of subject matter that the test is designed to assess. In some cases, tests may have multiple cut scores representing tiered levels of proficiency, such as <i>basic</i>, <i>proficient</i>, or <i>advanced</i>. Cut scores may also be applied in certification and licensing exams that are used to determine whether examinees are professionally "<i>qualified</i>."</p>

<p>Most criterion-referenced assessments use a <b>cut score</b> which determines success or failure based on a pre-established percent correct. Criterion-referenced scores tell us how well the examinee performed against an objective or standard, as opposed to against other examinees. For example, a driver's test intends to determine whether a person is knowledgeable and capable enough to be allowed on the road, not whether one driver is more accomplished than another.</p>


<br>
<h3>Standard Setting</h3>

<p>The process used to determine cut scores is formally known as <b>standard setting</b>. For tests like classroom assessments cut scores might be defined by the teacher, for final exams it might be defined by the school. For commercial and high-stakes tests, the test developer will form a standard-setting panel by recruiting a group of experts, such as psychometricians (specialists in the science of educational measurement) or teachers from a relevant content area. The panel will then use one or more research-based methods, developed by psychometricians and academics, for setting testing standards and determining cut scores.</p>

<p><font color=red>Activity 4:</font> Defining a cut score. Choose a cut score and see if Mary passed or failed the exam. You may also go back and change Mary's raw score. Note that defining a cut score does not change Mary's norm-referenced scores.</p>
<p>[<font color=blue>Graphic 3:</font> Selecting cut score] - Add Mary's pass/fail information in addition to her placement in comparison to the norm group.</p>
<p>{<u>Reactive text:</u> Mary scored XX points or YY% on the exam. Since Mary scored above the cut score of [KK], she has demonstrated [sufficient/insufficient] knowledge of 9th grade math curriculum and [passed/failed] the exam.}</p>

<p><font color=red>Activity 5:</font> Defining additional cut scores. Suppose you want to further categorize students into basic, proficient and advanced based on their scores on the math final exam. Select a cut score for the advanced level and see how Mary's classification changes.</p>
<p>[<font color=blue>Graphic 4:</font> Tiered classification graph]</p>
<p>{<u>Reactive text:</u> Mary scored XX points or YY% on the exam. Since Mary scored [above/below] the cut score of [KK], she has demonstrated [basic/proficient/advanced] knowledge of 9th grade math curriculum and [passed/failed] the exam.}</p>

<br>
<h3>Combining Norm- and Criterion-referenced Interpretations</h3>

<p>We can, and often do, interpret a single test score both in terms of norm- and criterion-referencing. However, these interpretations are distinct and should not be confused.</p>

<p><font color=red>Activity 6:</font> Now we will combine both types of interpretations of Mary's test score. Try changing Mary's raw score and see how it affects both her percentile rank in the norm group you selected and her proficiency levels based on the cut scores you defined.</p>
<p>[<font color=blue>Graphic 5:</font> Norm and Criterion-referenced interpretations]</p>
<p>{<u>Reactive text:</u> Mary scored XX points or YY% on the exam. This corresponds to a standard score of ZZ based on the distribution of scores for her [norm group] and she scored at the [ZZ] percentile. This means that based on her raw score Mary scored higher than [ZZ]% of the other students in her [class/school] (norm group) who took the test. In other words, [ZZ]% of the students who made up the norm group answered fewer than XX items correctly. 
<br><br>
Mary [did/did not] score at the 95th percentile rank, therefore she [did/did not] win the Math prize. 
<br><br>
Additionally, since Mary scored [above/below] the cut score of [KK], she has demonstrated [basic/proficient/advanced] knowledge of 9th grade math curriculum and [passed/failed] the exam.
}</p>

<br>
<br>
<h3>Summary</h3>

<p>The distinction between norm-referenced and criterion-referenced score interpretation can be summarized as follows.</p>
<ul>
	<li><b>Norm referencing:</b> when we interpret a score of an individual by comparing his score to those of other individuals called a norm group.</li>
	<li><b>Criterion referencing:</b> when we interpret a person's performance by comparing it to some pre-specified standard or criterion of proficiency.</li>
</ul>

<p>In our example, we could say that the focus of a normative score is on how well Mary performed on the Math final exam compared to her peers and the focus of a criterion-referenced score is on what it is that Mary can do and if she met the criteria of mastery of content included in the Math exam.</p>

<p>Uses and limitations of <b>norm-referenced</b> scores:</p>
<ul>
	<li>In order to make norm-referenced interpretations, the norm group must be representative of the population of examinees we want to compare to.</li>
	<li>Norm-referenced scores are usually used to identify specific learning disabilities, such as autism, dyslexia, or nonverbal learning disability, or to determine eligibility for special-education services.</li>
	<li>Reporting results in terms of percentiles or standard scores does not provide information on whether or not the students were proficient.</li>
	<li>It is possible that all students performed poorly and that none are proficient or that all are proficient.</li>
	<li>Rank ordering the student scores does not necessarily reflect an amount of knowledge and skills measured by the test.</li>
</ul>

<p>Uses and limitations of <b>criterion-referenced</b> scores:</p>
<ul>
	<li>Every student taking the exam could theoretically fail if they don't meet the expected standard; alternatively, every student could earn the highest possible score.</li>
	<li>It is not only possible, but desirable, for every student to pass the test or earn a perfect score.</li>
	<li>These scores are used to report how well students are doing relative to a pre-determined performance level on a specified set of educational goals or outcomes included in the school, district, or state curriculum.</li>
	<li>Scores may be used as one piece of information to determine how well the student is learning the desired curriculum and how well the school is teaching that curriculum.</li>
</ul>

<p>"Although loads of educators refer to "criterion-referenced tests" and "norm-referenced tests," there are, technically, no such creatures. Rather, there are criterion- and norm-referenced interpretations of students' test performances. For example, educators in a school district might have built a test to yield criterion-referenced interpretations, used the test for several years and, in the process, gathered substantial data regarding the performances of district students. As a consequence, the district's educators could build normative tables permitting norm-referenced interpretations of the test which, although born to provide criterion-referenced inferences, can still permit meaningful norm-referenced interpretations." Popham, W. James. 2011. <i>Classroom Assessment: What Teachers Need to Know (Sixth Edition)</i>. Boston: Pearson Education, Inc. pp. 46-8.</p>

</div> <!--closing CritNormModule div tag-->
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mootools.js

/*
---
MooTools: the javascript framework

web build:
 - http://mootools.net/core/5b88354153bcb3b6ae280d7f56d4147a

packager build:
 - packager build Core/Core Core/Array Core/Event Core/Class Core/Element Core/Element.Event Core/Element.Dimensions Core/Fx Core/Fx.CSS Core/Fx.Tween Core/Fx.Morph Core/Fx.Transitions Core/DOMReady

copyrights:
  - [MooTools](http://mootools.net)

licenses:
  - [MIT License](http://mootools.net/license.txt)
...
*/
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}var g=function(){e(this);if(g.$prototyping){return this;}this.$caller=null;var i=(this.initialize)?this.initialize.apply(this,arguments):this;this.$caller=this.caller=null;
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var j=new RegExp("^(?:\\s*(,)\\s*|\\s*(<combinator>+)\\s*|(\\s+)|(<unicode>+|\\*)|\\#(<unicode>+)|\\.(<unicode>+)|\\[\\s*(<unicode1>+)(?:\\s*([*^$!~|]?=)(?:\\s*(?:([\"']?)(.*?)\\9)))?\\s*\\](?!\\])|(:+)(<unicode>+)(?:\\((?:(?:([\"'])([^\\13]*)\\13)|((?:\\([^)]+\\)|[^()]*)+))\\))?)".replace(/<combinator>/,"["+f(">+~`!@$%^&={}\\;</")+"]").replace(/<unicode>/g,"(?:[\\w\\u00a1-\\uFFFF-]|\\\\[^\\s0-9a-f])").replace(/<unicode1>/g,"(?:[:\\w\\u00a1-\\uFFFF-]|\\\\[^\\s0-9a-f])"));
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}var S=z,x=U;if(!y){var C=x.getAttribute("id"),t="slickid__";x.setAttribute("id",t);S="#"+t+" "+S;U=x.parentNode;}try{if(s){return U.querySelector(S)||null;
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A=E[O++];){if(A.nodeName>"@"&&!(I&&V[this.getUID(A)])){p.push(A);}}}else{for(O=0;A=E[O++];){if(!(I&&V[this.getUID(A)])){p.push(A);}}}if(I){this.sort(p);
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if(!n){return false;}var o=n[2]||false;var m=n[1]||1;if(m=="-"){m=-1;}var c=+n[3]||0;n=(o=="n")?{a:m,b:c}:(o=="odd")?{a:2,b:1}:(o=="even")?{a:2,b:0}:{a:0,b:m};
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j.matchNode=function(m,n){if(this.isHTMLDocument&&this.nativeMatchesSelector){try{return this.nativeMatchesSelector.call(m,n.replace(/\[([^=]+)=\s*([^'"\]]+?)\s*\]/g,'[$1="$2"]'));
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var a=(c.style.cssFloat==null)?"styleFloat":"cssFloat";Element.implement({getComputedStyle:function(h){if(this.currentStyle){return this.currentStyle[h.camelCase()];
}var g=Element.getDocument(this).defaultView,f=g?g.getComputedStyle(this,null):null;return(f)?f.getPropertyValue((h==a)?"float":h.hyphenate()):null;},setOpacity:function(f){b(this,f);
return this;},getOpacity:function(){return this.get("opacity");},setStyle:function(g,f){switch(g){case"opacity":return this.set("opacity",parseFloat(f));
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}return(typeOf(k)=="number")?h[j].replace("@",Math.round(k)):k;}).join(" ");}else{if(f==String(Number(f))){f=Math.round(f);}}this.style[g]=f;return this;
},getStyle:function(l){switch(l){case"opacity":return this.get("opacity");case"float":l=a;}l=l.camelCase();var f=this.style[l];if(!f||l=="zIndex"){f=[];
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g.each(function(m){i+=this.getStyle("border-"+m+"-width").toInt()+this.getStyle("padding-"+m).toInt();},this);return this["offset"+l.capitalize()]-i+"px";
}if(Browser.opera&&String(f).indexOf("px")!=-1){return f;}if((/^border(.+)Width|margin|padding/).test(l)){return"0px";}}return f;},setStyles:function(g){for(var f in g){this.setStyle(f,g[f]);
}return this;},getStyles:function(){var f={};Array.flatten(arguments).each(function(g){f[g]=this.getStyle(g);},this);return f;}});Element.Styles={left:"@px",top:"@px",bottom:"@px",right:"@px",width:"@px",height:"@px",maxWidth:"@px",maxHeight:"@px",minWidth:"@px",minHeight:"@px",backgroundColor:"rgb(@, @, @)",backgroundPosition:"@px @px",color:"rgb(@, @, @)",fontSize:"@px",letterSpacing:"@px",lineHeight:"@px",clip:"rect(@px @px @px @px)",margin:"@px @px @px @px",padding:"@px @px @px @px",border:"@px @ rgb(@, @, @) @px @ rgb(@, @, @) @px @ rgb(@, @, @)",borderWidth:"@px @px @px @px",borderStyle:"@ @ @ @",borderColor:"rgb(@, @, @) rgb(@, @, @) rgb(@, @, @) rgb(@, @, @)",zIndex:"@",zoom:"@",fontWeight:"@",textIndent:"@px",opacity:"@"};
Element.ShortStyles={margin:{},padding:{},border:{},borderWidth:{},borderStyle:{},borderColor:{}};["Top","Right","Bottom","Left"].each(function(l){var k=Element.ShortStyles;
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},getScroll:function(){if(a(this)){return this.getWindow().getScroll();}return{x:this.scrollLeft,y:this.scrollTop};},getScrolls:function(){var n=this.parentNode,m={x:0,y:0};
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}var n=(k(m,"position")=="static")?i:l;while((m=m.parentNode)){if(n(m)){return m;}}return null;}:function(){var m=this;if(a(m)||k(m,"position")=="fixed"){return null;
}try{return m.offsetParent;}catch(n){}return null;},getOffsets:function(){if(this.getBoundingClientRect&&!Browser.Platform.ios){var r=this.getBoundingClientRect(),o=document.id(this.getDocument().documentElement),q=o.getScroll(),t=this.getScrolls(),s=(k(this,"position")=="fixed");
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m.y+=n.offsetTop;if(Browser.firefox){if(!c(n)){m.x+=b(n);m.y+=g(n);}var p=n.parentNode;if(p&&k(p,"overflow")!="visible"){m.x+=b(p);m.y+=g(p);}}else{if(n!=this&&Browser.safari){m.x+=b(n);
m.y+=g(n);}}n=n.offsetParent;}if(Browser.firefox&&!c(this)){m.x-=b(this);m.y-=g(this);}return m;},getPosition:function(p){if(a(this)){return{x:0,y:0};}var q=this.getOffsets(),n=this.getScrolls();
var m={x:q.x-n.x,y:q.y-n.y};if(p&&(p=document.id(p))){var o=p.getPosition();return{x:m.x-o.x-b(p),y:m.y-o.y-g(p)};}return m;},getCoordinates:function(o){if(a(this)){return this.getWindow().getCoordinates();
}var m=this.getPosition(o),n=this.getSize();var p={left:m.x,top:m.y,width:n.x,height:n.y};p.right=p.left+p.width;p.bottom=p.top+p.height;return p;},computePosition:function(m){return{left:m.x-j(this,"margin-left"),top:m.y-j(this,"margin-top")};
},setPosition:function(m){return this.setStyles(this.computePosition(m));}});[Document,Window].invoke("implement",{getSize:function(){var m=f(this);return{x:m.clientWidth,y:m.clientHeight};
},getScroll:function(){var n=this.getWindow(),m=f(this);return{x:n.pageXOffset||m.scrollLeft,y:n.pageYOffset||m.scrollTop};},getScrollSize:function(){var o=f(this),n=this.getSize(),m=this.getDocument().body;
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}function g(m){return j(m,"border-top-width");}function b(m){return j(m,"border-left-width");}function a(m){return(/^(?:body|html)$/i).test(m.tagName);
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},getWidth:function(){return this.getSize().x;},getScrollTop:function(){return this.getScroll().y;},getScrollLeft:function(){return this.getScroll().x;
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}var c=this.$events[e];for(var b=c.length;b--;){if(b in c){this.removeEvent(e,c[b]);}}}return this;}});this.Options=new Class({setOptions:function(){var b=this.options=Object.merge.apply(null,[{},this.options].append(arguments));
if(this.addEvent){for(var c in b){if(typeOf(b[c])!="function"||!(/^on[A-Z]/).test(c)){continue;}this.addEvent(c,b[c]);delete b[c];}}return this;}});})();
(function(){var f=this.Fx=new Class({Implements:[Chain,Events,Options],options:{fps:60,unit:false,duration:500,frames:null,frameSkip:true,link:"ignore"},initialize:function(g){this.subject=this.subject||this;
this.setOptions(g);},getTransition:function(){return function(g){return -(Math.cos(Math.PI*g)-1)/2;};},step:function(g){if(this.options.frameSkip){var h=(this.time!=null)?(g-this.time):0,i=h/this.frameInterval;
this.time=g;this.frame+=i;}else{this.frame++;}if(this.frame<this.frames){var j=this.transition(this.frame/this.frames);this.set(this.compute(this.from,this.to,j));
}else{this.frame=this.frames;this.set(this.compute(this.from,this.to,1));this.stop();}},set:function(g){return g;},compute:function(i,h,g){return f.compute(i,h,g);
},check:function(){if(!this.isRunning()){return true;}switch(this.options.link){case"cancel":this.cancel();return true;case"chain":this.chain(this.caller.pass(arguments,this));
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this.transition=this.getTransition();var i=this.options.frames,h=this.options.fps,g=this.options.duration;this.duration=f.Durations[g]||g.toInt();this.frameInterval=1000/h;
this.frames=i||Math.round(this.duration/this.frameInterval);this.fireEvent("start",this.subject);b.call(this,h);return this;},stop:function(){if(this.isRunning()){this.time=null;
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}}else{this.fireEvent("stop",this.subject);}}return this;},cancel:function(){if(this.isRunning()){this.time=null;d.call(this,this.options.fps);this.frame=this.frames;
this.fireEvent("cancel",this.subject).clearChain();}return this;},pause:function(){if(this.isRunning()){this.time=null;d.call(this,this.options.fps);}return this;
},resume:function(){if((this.frame<this.frames)&&!this.isRunning()){b.call(this,this.options.fps);}return this;},isRunning:function(){var g=e[this.options.fps];
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for(var j=this.length;j--;){var g=this[j];if(g){g.step(h);}}};var b=function(h){var g=e[h]||(e[h]=[]);g.push(this);if(!c[h]){c[h]=a.periodical(Math.round(1000/h),g);
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if(b[1]==null){b[1]=b[0];b[0]=c.getStyle(d);}var a=b.map(this.parse);return{from:a[0],to:a[1]};},parse:function(a){a=Function.from(a)();a=(typeof a=="string")?a.split(" "):Array.from(a);
return a.map(function(c){c=String(c);var b=false;Object.each(Fx.CSS.Parsers,function(f,e){if(b){return;}var d=f.parse(c);if(d||d===0){b={value:d,parser:f};
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}return((a=a.match(/(\d+),\s*(\d+),\s*(\d+)/)))?[a[1],a[2],a[3]]:false;},compute:function(c,b,a){return c.map(function(e,d){return Math.round(Fx.compute(c[d],b[d],a));
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},serve:function(a){return a;}}};Fx.Tween=new Class({Extends:Fx.CSS,initialize:function(b,a){this.element=this.subject=document.id(b);this.parent(a);},set:function(b,a){if(arguments.length==1){a=b;
b=this.property||this.options.property;}this.render(this.element,b,a,this.options.unit);return this;},start:function(c,e,d){if(!this.check(c,e,d)){return this;
}var b=Array.flatten(arguments);this.property=this.options.property||b.shift();var a=this.prepare(this.element,this.property,b);return this.parent(a.from,a.to);
}});Element.Properties.tween={set:function(a){this.get("tween").cancel().setOptions(a);return this;},get:function(){var a=this.retrieve("tween");if(!a){a=new Fx.Tween(this,{link:"cancel"});
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a=(a=="transparent")?"#fff":a;}var b=this.get("tween");b.start("background-color",c||"#ffff88",a).chain(function(){this.setStyle("background-color",this.retrieve("highlight:original"));
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return this;}});Fx.implement({getTransition:function(){var a=this.options.transition||Fx.Transitions.Sine.easeInOut;if(typeof a=="string"){var b=a.split(":");
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var a=function(d){return c(d,b);};return Object.append(a,{easeIn:a,easeOut:function(d){return 1-c(1-d,b);},easeInOut:function(d){return(d<=0.5?c(2*d,b):(2-c(2*(1-d),b)))/2;
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},Elastic:function(b,a){return Math.pow(2,10*--b)*Math.cos(20*b*Math.PI*(a&&a[0]||1)/3);}});["Quad","Cubic","Quart","Quint"].each(function(b,a){Fx.Transitions[b]=new Fx.Transition(function(c){return Math.pow(c,a+2);
});});(function(i,k){var l,f,e=[],c,b,d=k.createElement("div");var g=function(){clearTimeout(b);if(l){return;}Browser.loaded=l=true;k.removeListener("DOMContentLoaded",g).removeListener("readystatechange",a);
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normal_dist.png

nv.d3.min.css

svg{-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;display:block;width:100%;height:100%}svg.nvd3-svg{-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-ms-user-select:none;-moz-user-select:none;user-select:none;display:block}.nvtooltip.with-3d-shadow,.with-3d-shadow .nvtooltip{-moz-box-shadow:0 5px 10px rgba(0,0,0,.2);-webkit-box-shadow:0 5px 10px rgba(0,0,0,.2);box-shadow:0 5px 10px rgba(0,0,0,.2);-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px}.nvtooltip{position:absolute;background-color:rgba(255,255,255,1);padding:1px;border:1px solid rgba(0,0,0,.2);z-index:10000;font-family:Arial;font-size:13px;text-align:left;pointer-events:none;white-space:nowrap;-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.nvtooltip.with-transitions,.with-transitions .nvtooltip{transition:opacity 50ms linear;-moz-transition:opacity 50ms linear;-webkit-transition:opacity 50ms linear;transition-delay:200ms;-moz-transition-delay:200ms;-webkit-transition-delay:200ms}.nvtooltip.x-nvtooltip,.nvtooltip.y-nvtooltip{padding:8px}.nvtooltip h3{margin:0;padding:4px 14px;line-height:18px;font-weight:400;background-color:rgba(247,247,247,.75);text-align:center;border-bottom:1px solid #ebebeb;-webkit-border-radius:5px 5px 0 0;-moz-border-radius:5px 5px 0 0;border-radius:1px 5px 0 0}.nvtooltip p{margin:0;padding:5px 14px;text-align:center}.nvtooltip span{display:inline-block;margin:2px 0}.nvtooltip table{margin:6px;border-spacing:0}.nvtooltip table td{padding:2px 9px 2px 0;vertical-align:middle}.nvtooltip table td.key{font-weight:400}.nvtooltip table td.value{text-align:right;font-weight:700}.nvtooltip table tr.highlight td{padding:1px 9px 1px 0;border-bottom-style:solid;border-bottom-width:1px;border-top-style:solid;border-top-width:1px}.nvtooltip table td.legend-color-guide div{width:8px;height:8px;vertical-align:middle}.nvtooltip .footer{padding:3px;text-align:center}.nvtooltip-pending-removal{position:absolute;pointer-events:none}.nvd3 text{font:400 12px Arial}.nvd3 .title{font:700 14px Arial}.nvd3 .nv-background{fill:#fff;fill-opacity:0}.nvd3.nv-noData{font-size:18px;font-weight:700}.nv-brush .extent{fill-opacity:.125;shape-rendering:crispEdges}.nvd3 .nv-legend .nv-series{cursor:pointer}.nvd3 .nv-legend .nv-disabled circle{fill-opacity:0}.axis{opacity:1}.axis.nv-disabled{opacity:0}.nvd3 .nv-axis{pointer-events:none}.nvd3 .nv-axis path{fill:none;stroke:#000;stroke-opacity:.75;shape-rendering:crispEdges}.nvd3 .nv-axis path.domain{stroke-opacity:.75}.nvd3 .nv-axis.nv-x path.domain{stroke-opacity:0}.nvd3 .nv-axis line{fill:none;stroke:#e5e5e5;shape-rendering:crispEdges}.nvd3 .nv-axis .zero line,.nvd3 .nv-axis line.zero{stroke-opacity:.75}.nvd3 .nv-axis .nv-axisMaxMin text{font-weight:700}.nvd3 .x .nv-axis .nv-axisMaxMin text,.nvd3 .x2 .nv-axis .nv-axisMaxMin text,.nvd3 .x3 .nv-axis .nv-axisMaxMin text{text-anchor:middle}.nv-brush .resize path{fill:#eee;stroke:#666}.nvd3 .nv-bars .negative rect{zfill:brown}.nvd3 .nv-bars rect{zfill:#4682b4;fill-opacity:.75;transition:fill-opacity 250ms linear;-moz-transition:fill-opacity 250ms linear;-webkit-transition:fill-opacity 250ms linear}.nvd3 .nv-bars rect.hover{fill-opacity:1}.nvd3 .nv-bars .hover rect{fill:#add8e6}.nvd3 .nv-bars text{fill:rgba(0,0,0,0)}.nvd3 .nv-bars .hover text{fill:rgba(0,0,0,1)}.nvd3 .nv-multibar .nv-groups rect,.nvd3 .nv-multibarHorizontal .nv-groups rect,.nvd3 .nv-discretebar .nv-groups rect{stroke-opacity:0;transition:fill-opacity 250ms linear;-moz-transition:fill-opacity 250ms linear;-webkit-transition:fill-opacity 250ms linear}.nvd3 .nv-multibar .nv-groups rect:hover,.nvd3 .nv-multibarHorizontal .nv-groups rect:hover,.nvd3 .nv-discretebar .nv-groups rect:hover{fill-opacity:1}.nvd3 .nv-discretebar .nv-groups text,.nvd3 .nv-multibarHorizontal .nv-groups text{font-weight:700;fill:rgba(0,0,0,1);stroke:rgba(0,0,0,0)}.nvd3.nv-pie path{stroke-opacity:0;transition:fill-opacity 250ms linear,stroke-width 250ms linear,stroke-opacity 250ms linear;-moz-transition:fill-opacity 250ms linear,stroke-width 250ms linear,stroke-opacity 250ms linear;-webkit-transition:fill-opacity 250ms linear,stroke-width 250ms linear,stroke-opacity 250ms linear}.nvd3.nv-pie .nv-pie-title{font-size:24px;fill:rgba(19,196,249,.59)}.nvd3.nv-pie .nv-slice text{stroke:#000;stroke-width:0}.nvd3.nv-pie path{stroke:#fff;stroke-width:1px;stroke-opacity:1}.nvd3.nv-pie .hover path{fill-opacity:.7}.nvd3.nv-pie .nv-label{pointer-events:none}.nvd3.nv-pie .nv-label rect{fill-opacity:0;stroke-opacity:0}.nvd3 .nv-groups path.nv-line{fill:none;stroke-width:1.5px}.nvd3 .nv-groups path.nv-line.nv-thin-line{stroke-width:1px}.nvd3 .nv-groups path.nv-area{stroke:none}.nvd3 .nv-line.hover path{stroke-width:6px}.nvd3.nv-line .nvd3.nv-scatter .nv-groups .nv-point{fill-opacity:0;stroke-opacity:0}.nvd3.nv-scatter.nv-single-point .nv-groups .nv-point{fill-opacity:.5!important;stroke-opacity:.5!important}.with-transitions .nvd3 .nv-groups .nv-point{transition:stroke-width 250ms linear,stroke-opacity 250ms linear;-moz-transition:stroke-width 250ms linear,stroke-opacity 250ms linear;-webkit-transition:stroke-width 250ms linear,stroke-opacity 250ms linear}.nvd3.nv-scatter .nv-groups .nv-point.hover,.nvd3 .nv-groups .nv-point.hover{stroke-width:7px;fill-opacity:.95!important;stroke-opacity:.95!important}.nvd3 .nv-point-paths path{stroke:#aaa;stroke-opacity:0;fill:#eee;fill-opacity:0}.nvd3 .nv-indexLine{cursor:ew-resize}.nvd3 .nv-distribution{pointer-events:none}.nvd3 .nv-groups .nv-point.hover{stroke-width:20px;stroke-opacity:.5}.nvd3 .nv-scatter .nv-point.hover{fill-opacity:1}.nvd3.nv-stackedarea path.nv-area{fill-opacity:.7;stroke-opacity:0;transition:fill-opacity 250ms linear,stroke-opacity 250ms linear;-moz-transition:fill-opacity 250ms linear,stroke-opacity 250ms linear;-webkit-transition:fill-opacity 250ms linear,stroke-opacity 250ms linear}.nvd3.nv-stackedarea path.nv-area.hover{fill-opacity:.9}.nvd3.nv-stackedarea .nv-groups .nv-point{stroke-opacity:0;fill-opacity:0}.nvd3.nv-linePlusBar .nv-bar rect{fill-opacity:.75}.nvd3.nv-linePlusBar .nv-bar rect:hover{fill-opacity:1}.nvd3.nv-bullet{font:10px sans-serif}.nvd3.nv-bullet .nv-measure{fill-opacity:.8}.nvd3.nv-bullet .nv-measure:hover{fill-opacity:1}.nvd3.nv-bullet .nv-marker{stroke:#000;stroke-width:2px}.nvd3.nv-bullet .nv-markerTriangle{stroke:#000;fill:#fff;stroke-width:1.5px}.nvd3.nv-bullet .nv-tick line{stroke:#666;stroke-width:.5px}.nvd3.nv-bullet .nv-range.nv-s0{fill:#eee}.nvd3.nv-bullet .nv-range.nv-s1{fill:#ddd}.nvd3.nv-bullet .nv-range.nv-s2{fill:#ccc}.nvd3.nv-bullet .nv-title{font-size:14px;font-weight:700}.nvd3.nv-bullet .nv-subtitle{fill:#999}.nvd3.nv-bullet .nv-range{fill:#bababa;fill-opacity:.4}.nvd3.nv-bullet .nv-range:hover{fill-opacity:.7}.nvd3.nv-sparkline path{fill:none}.nvd3.nv-sparklineplus g.nv-hoverValue{pointer-events:none}.nvd3.nv-sparklineplus .nv-hoverValue line{stroke:#333;stroke-width:1.5px}.nvd3.nv-sparklineplus,.nvd3.nv-sparklineplus g{pointer-events:all}.nvd3 .nv-hoverArea{fill-opacity:0;stroke-opacity:0}.nvd3.nv-sparklineplus .nv-xValue,.nvd3.nv-sparklineplus .nv-yValue{stroke-width:0;font-size:.9em;font-weight:400}.nvd3.nv-sparklineplus .nv-yValue{stroke:#f66}.nvd3.nv-sparklineplus .nv-maxValue{stroke:#2ca02c;fill:#2ca02c}.nvd3.nv-sparklineplus .nv-minValue{stroke:#d62728;fill:#d62728}.nvd3.nv-sparklineplus .nv-currentValue{font-weight:700;font-size:1.1em}.nvd3.nv-ohlcBar .nv-ticks .nv-tick{stroke-width:1px}.nvd3.nv-ohlcBar .nv-ticks .nv-tick.hover{stroke-width:2px}.nvd3.nv-ohlcBar .nv-ticks .nv-tick.positive{stroke:#2ca02c}.nvd3.nv-ohlcBar .nv-ticks .nv-tick.negative{stroke:#d62728}.nvd3.nv-historicalStockChart .nv-axis .nv-axislabel{font-weight:700}.nvd3.nv-historicalStockChart .nv-dragTarget{fill-opacity:0;stroke:none;cursor:move}.nvd3 .nv-brush .extent{fill-opacity:0!important}.nvd3 .nv-brushBackground rect{stroke:#000;stroke-width:.4;fill:#fff;fill-opacity:.7}.nvd3 .background path{fill:none;stroke:#EEE;stroke-opacity:.4;shape-rendering:crispEdges}.nvd3 .foreground path{fill:none;stroke-opacity:.7}.nvd3 .brush .extent{fill-opacity:.3;stroke:#fff;shape-rendering:crispEdges}.nvd3 .axis line,.axis path{fill:none;stroke:#000;shape-rendering:crispEdges}.nvd3 .axis text{text-shadow:0 1px 0 #fff}.nvd3 .nv-interactiveGuideLine{pointer-events:none}.nvd3 line.nv-guideline{stroke:#ccc}

nv.d3.min.js

/* nvd3 version 1.7.1 (https://github.com/novus/nvd3) 2015-02-08 */
!function(){var a=window.nv||{};window.nv=a,a.dev=!1,a.tooltip=a.tooltip||{},a.utils=a.utils||{},a.models=a.models||{},a.charts={},a.graphs=[],a.logs={},a.dispatch=d3.dispatch("render_start","render_end"),Function.prototype.bind||(Function.prototype.bind=function(a){if("function"!=typeof this)throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");var b=Array.prototype.slice.call(arguments,1),c=this,d=function(){},e=function(){return c.apply(this instanceof d&&a?this:a,b.concat(Array.prototype.slice.call(arguments)))};return d.prototype=this.prototype,e.prototype=new d,e}),a.dev&&(a.dispatch.on("render_start",function(){a.logs.startTime=+new Date}),a.dispatch.on("render_end",function(){a.logs.endTime=+new Date,a.logs.totalTime=a.logs.endTime-a.logs.startTime,a.log("total",a.logs.totalTime)})),a.log=function(){if(a.dev&&window.console&&console.log&&console.log.apply)console.log.apply(console,arguments);else if(a.dev&&window.console&&"function"==typeof console.log&&Function.prototype.bind){var b=Function.prototype.bind.call(console.log,console);b.apply(console,arguments)}return arguments[arguments.length-1]},a.deprecated=function(b){a.dev&&console&&console.warn&&console.warn("`"+b+"` has been deprecated.")},a.render=function(b){b=b||1,a.render.active=!0,a.dispatch.render_start(),setTimeout(function(){for(var c,d,e=0;b>e&&(d=a.render.queue[e]);e++)c=d.generate(),typeof d.callback==typeof Function&&d.callback(c),a.graphs.push(c);a.render.queue.splice(0,e),a.render.queue.length?setTimeout(arguments.callee,0):(a.dispatch.render_end(),a.render.active=!1)},0)},a.render.active=!1,a.render.queue=[],a.addGraph=function(b){typeof arguments[0]==typeof Function&&(b={generate:arguments[0],callback:arguments[1]}),a.render.queue.push(b),a.render.active||a.render()},a.interactiveGuideline=function(){"use strict";function b(l){l.each(function(l){function m(){var a=d3.mouse(this),d=a[0],e=a[1],i=!0,j=!1;if(k&&(d=d3.event.offsetX,e=d3.event.offsetY,"svg"!==d3.event.target.tagName&&(i=!1),d3.event.target.className.baseVal.match("nv-legend")&&(j=!0)),i&&(d-=f.left,e-=f.top),0>d||0>e||d>o||e>p||d3.event.relatedTarget&&void 0===d3.event.relatedTarget.ownerSVGElement||j){if(k&&d3.event.relatedTarget&&void 0===d3.event.relatedTarget.ownerSVGElement&&d3.event.relatedTarget.className.match(c.nvPointerEventsClass))return;return h.elementMouseout({mouseX:d,mouseY:e}),void b.renderGuideLine(null)}var l=g.invert(d);h.elementMousemove({mouseX:d,mouseY:e,pointXValue:l}),"dblclick"===d3.event.type&&h.elementDblclick({mouseX:d,mouseY:e,pointXValue:l}),"click"===d3.event.type&&h.elementClick({mouseX:d,mouseY:e,pointXValue:l})}var n=d3.select(this),o=d||960,p=e||400,q=n.selectAll("g.nv-wrap.nv-interactiveLineLayer").data([l]),r=q.enter().append("g").attr("class"," nv-wrap 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arguments.length?(e=a,b):e},b.xScale=function(a){return arguments.length?(g=a,b):g},b.showGuideLine=function(a){return arguments.length?(i=a,b):i},b.svgContainer=function(a){return arguments.length?(j=a,b):j},b},a.interactiveBisect=function(a,b,c){"use strict";if(!(a instanceof Array))return null;"function"!=typeof c&&(c=function(a){return a.x});var d=d3.bisector(c).left,e=d3.max([0,d(a,b)-1]),f=c(a[e],e);if("undefined"==typeof f&&(f=e),f===b)return e;var g=d3.min([e+1,a.length-1]),h=c(a[g],g);return"undefined"==typeof h&&(h=g),Math.abs(h-b)>=Math.abs(f-b)?e:g},a.nearestValueIndex=function(a,b,c){"use strict";var d=1/0,e=null;return a.forEach(function(a,f){var g=Math.abs(b-a);d>=g&&c>g&&(d=g,e=f)}),e},function(){"use strict";window.nv.tooltip={},window.nv.models.tooltip=function(){function b(){if(l){var a=d3.select(l);"svg"!==a.node().tagName&&(a=a.select("svg"));var b=a.node()?a.attr("viewBox"):null;if(b){b=b.split(" ");var c=parseInt(a.style("width"))/b[2];n.left=n.left*c,n.top=n.top*c}}}function c(a){var b;b=d3.select(l?l:"body");var c=b.select(".nvtooltip");return null===c.node()&&(c=b.append("div").attr("class","nvtooltip "+(k?k:"xy-tooltip")).attr("id",p)),c.node().innerHTML=a,c.style("top",0).style("left",0).style("opacity",0),c.selectAll("div, table, td, tr").classed(q,!0),c.classed(q,!0),c.node()}function d(){if(o&&u(f)){b();var e=n.left,k=null!=j?j:n.top,p=c(t(f));if(m=p,l){var q=l.getElementsByTagName("svg")[0],r=(q?q.getBoundingClientRect():l.getBoundingClientRect(),{left:0,top:0});if(q){var s=q.getBoundingClientRect(),v=l.getBoundingClientRect(),w=s.top;if(0>w){var x=l.getBoundingClientRect();w=Math.abs(w)>x.height?0:w}r.top=Math.abs(w-v.top),r.left=Math.abs(s.left-v.left)}e+=l.offsetLeft+r.left-2*l.scrollLeft,k+=l.offsetTop+r.top-2*l.scrollTop}return i&&i>0&&(k=Math.floor(k/i)*i),a.tooltip.calcTooltipPosition([e,k],g,h,p),d}}var e=null,f=null,g="w",h=50,i=25,j=null,k=null,l=null,m=null,n={left:null,top:null},o=!0,p="nvtooltip-"+Math.floor(1e5*Math.random()),q="nv-pointer-events-none",r=function(a){return a},s=function(a){return a},t=function(a){if(null!=e)return e;if(null==a)return"";var b=d3.select(document.createElement("table")),c=b.selectAll("thead").data([a]).enter().append("thead");c.append("tr").append("td").attr("colspan",3).append("strong").classed("x-value",!0).html(s(a.value));var d=b.selectAll("tbody").data([a]).enter().append("tbody"),f=d.selectAll("tr").data(function(a){return a.series}).enter().append("tr").classed("highlight",function(a){return a.highlight});f.append("td").classed("legend-color-guide",!0).append("div").style("background-color",function(a){return a.color}),f.append("td").classed("key",!0).html(function(a){return a.key}),f.append("td").classed("value",!0).html(function(a,b){return r(a.value,b)}),f.selectAll("td").each(function(a){if(a.highlight){var b=d3.scale.linear().domain([0,1]).range(["#fff",a.color]),c=.6;d3.select(this).style("border-bottom-color",b(c)).style("border-top-color",b(c))}});var g=b.node().outerHTML;return void 0!==a.footer&&(g+="<div class='footer'>"+a.footer+"</div>"),g},u=function(a){return a&&a.series&&a.series.length>0?!0:!1};return d.nvPointerEventsClass=q,d.content=function(a){return arguments.length?(e=a,d):e},d.tooltipElem=function(){return m},d.contentGenerator=function(a){return arguments.length?("function"==typeof a&&(t=a),d):t},d.data=function(a){return arguments.length?(f=a,d):f},d.gravity=function(a){return arguments.length?(g=a,d):g},d.distance=function(a){return arguments.length?(h=a,d):h},d.snapDistance=function(a){return arguments.length?(i=a,d):i},d.classes=function(a){return arguments.length?(k=a,d):k},d.chartContainer=function(a){return arguments.length?(l=a,d):l},d.position=function(a){return arguments.length?(n.left="undefined"!=typeof a.left?a.left:n.left,n.top="undefined"!=typeof a.top?a.top:n.top,d):n},d.fixedTop=function(a){return arguments.length?(j=a,d):j},d.enabled=function(a){return arguments.length?(o=a,d):o},d.valueFormatter=function(a){return arguments.length?("function"==typeof a&&(r=a),d):r},d.headerFormatter=function(a){return arguments.length?("function"==typeof a&&(s=a),d):s},d.id=function(){return p},d},a.tooltip.show=function(b,c,d,e,f,g){var h=document.createElement("div");h.className="nvtooltip "+(g?g:"xy-tooltip");var i=f;(!f||f.tagName.match(/g|svg/i))&&(i=document.getElementsByTagName("body")[0]),h.style.left=0,h.style.top=0,h.style.opacity=0,"string"!=typeof c?h.appendChild(c):h.innerHTML=c,i.appendChild(h),f&&(b[0]=b[0]-f.scrollLeft,b[1]=b[1]-f.scrollTop),a.tooltip.calcTooltipPosition(b,d,e,h)},a.tooltip.findFirstNonSVGParent=function(a){for(;null!==a.tagName.match(/^g|svg$/i);)a=a.parentNode;return a},a.tooltip.findTotalOffsetTop=function(a,b){var c=b;do isNaN(a.offsetTop)||(c+=a.offsetTop);while(a=a.offsetParent);return c},a.tooltip.findTotalOffsetLeft=function(a,b){var c=b;do isNaN(a.offsetLeft)||(c+=a.offsetLeft);while(a=a.offsetParent);return c},a.tooltip.calcTooltipPosition=function(b,c,d,e){var f,g,h=parseInt(e.offsetHeight),i=parseInt(e.offsetWidth),j=a.utils.windowSize().width,k=a.utils.windowSize().height,l=window.pageYOffset,m=window.pageXOffset;k=window.innerWidth>=document.body.scrollWidth?k:k-16,j=window.innerHeight>=document.body.scrollHeight?j:j-16,c=c||"s",d=d||20;var n=function(b){return a.tooltip.findTotalOffsetTop(b,g)},o=function(b){return a.tooltip.findTotalOffsetLeft(b,f)};switch(c){case"e":f=b[0]-i-d,g=b[1]-h/2;var p=o(e),q=n(e);m>p&&(f=b[0]+d>m?b[0]+d:m-p+f),l>q&&(g=l-q+g),q+h>l+k&&(g=l+k-q+g-h);break;case"w":f=b[0]+d,g=b[1]-h/2;var p=o(e),q=n(e);p+i>j&&(f=b[0]-i-d),l>q&&(g=l+5),q+h>l+k&&(g=l+k-q+g-h);break;case"n":f=b[0]-i/2-5,g=b[1]+d;var p=o(e),q=n(e);m>p&&(f=m+5),p+i>j&&(f=f-i/2+5),q+h>l+k&&(g=l+k-q+g-h);break;case"s":f=b[0]-i/2,g=b[1]-h-d;var p=o(e),q=n(e);m>p&&(f=m+5),p+i>j&&(f=f-i/2+5),l>q&&(g=l);break;case"none":f=b[0],g=b[1]-d;var p=o(e),q=n(e)}return e.style.left=f+"px",e.style.top=g+"px",e.style.opacity=1,e.style.position="absolute",e},a.tooltip.cleanup=function(){for(var a=document.getElementsByClassName("nvtooltip"),b=[];a.length;)b.push(a[0]),a[0].style.transitionDelay="0 !important",a[0].style.opacity=0,a[0].className="nvtooltip-pending-removal";setTimeout(function(){for(;b.length;){var a=b.pop();a.parentNode.removeChild(a)}},500)}}(),a.utils.windowSize=function(){var a={width:640,height:480};return document.body&&document.body.offsetWidth&&(a.width=document.body.offsetWidth,a.height=document.body.offsetHeight),"CSS1Compat"==document.compatMode&&document.documentElement&&document.documentElement.offsetWidth&&(a.width=document.documentElement.offsetWidth,a.height=document.documentElement.offsetHeight),window.innerWidth&&window.innerHeight&&(a.width=window.innerWidth,a.height=window.innerHeight),a},a.utils.windowResize=function(b){return window.addEventListener?window.addEventListener("resize",b):a.log("ERROR: Failed to bind to window.resize with: ",b),{callback:b,clear:function(){window.removeEventListener("resize",b)}}},a.utils.getColor=function(b){return arguments.length?b instanceof Array?function(a,c){return a.color||b[c%b.length]}:b:a.utils.defaultColor()},a.utils.defaultColor=function(){var a=d3.scale.category20().range();return function(b,c){return b.color||a[c%a.length]}},a.utils.customTheme=function(a,b,c){b=b||function(a){return a.key},c=c||d3.scale.category20().range();var d=c.length;return function(e){var f=b(e);return"function"==typeof a[f]?a[f]():void 0!==a[f]?a[f]:(d||(d=c.length),d-=1,c[d])}},a.utils.pjax=function(b,c){var d=function(d){d3.html(d,function(d){var e=d3.select(c).node();e.parentNode.replaceChild(d3.select(d).select(c).node(),e),a.utils.pjax(b,c)})};d3.selectAll(b).on("click",function(){history.pushState(this.href,this.textContent,this.href),d(this.href),d3.event.preventDefault()}),d3.select(window).on("popstate",function(){d3.event.state&&d(d3.event.state)})},a.utils.calcApproxTextWidth=function(a){if("function"==typeof a.style&&"function"==typeof a.text){var b=parseInt(a.style("font-size").replace("px","")),c=a.text().length;return c*b*.5}return 0},a.utils.NaNtoZero=function(a){return"number"!=typeof a||isNaN(a)||null===a||1/0===a||a===-1/0?0:a},d3.selection.prototype.watchTransition=function(a){var b=[this].concat([].slice.call(arguments,1));return a.transition.apply(a,b)},a.utils.renderWatch=function(b,c){if(!(this instanceof a.utils.renderWatch))return new a.utils.renderWatch(b,c);var d=void 0!==c?c:250,e=[],f=this;this.models=function(a){return a=[].slice.call(arguments,0),a.forEach(function(a){a.__rendered=!1,function(a){a.dispatch.on("renderEnd",function(){a.__rendered=!0,f.renderEnd("model")})}(a),e.indexOf(a)<0&&e.push(a)}),this},this.reset=function(a){void 0!==a&&(d=a),e=[]},this.transition=function(a,b,c){if(b=arguments.length>1?[].slice.call(arguments,1):[],c=b.length>1?b.pop():void 0!==d?d:250,a.__rendered=!1,e.indexOf(a)<0&&e.push(a),0===c)return a.__rendered=!0,a.delay=function(){return this},a.duration=function(){return this},a;a.__rendered=0===a.length?!0:a.every(function(a){return!a.length})?!0:!1;var g=0;return a.transition().duration(c).each(function(){++g}).each("end",function(){0===--g&&(a.__rendered=!0,f.renderEnd.apply(this,b))})},this.renderEnd=function(){e.every(function(a){return a.__rendered})&&(e.forEach(function(a){a.__rendered=!1}),b.renderEnd.apply(this,arguments))}},a.utils.deepExtend=function(b){var c=arguments.length>1?[].slice.call(arguments,1):[];c.forEach(function(c){for(key in c){var d=b[key]instanceof Array,e="object"==typeof b[key],f="object"==typeof c[key];e&&!d&&f?a.utils.deepExtend(b[key],c[key]):b[key]=c[key]}})},a.utils.state=function(){if(!(this instanceof a.utils.state))return new a.utils.state;var b={},c=function(){},d=function(){return{}},e=null,f=null;this.dispatch=d3.dispatch("change","set"),this.dispatch.on("set",function(a){c(a,!0)}),this.getter=function(a){return d=a,this},this.setter=function(a,b){return b||(b=function(){}),c=function(c,d){a(c),d&&b()},this},this.init=function(b){e=e||{},a.utils.deepExtend(e,b)};var g=function(){var a=d();if(JSON.stringify(a)===JSON.stringify(b))return!1;for(var c in a)void 0===b[c]&&(b[c]={}),b[c]=a[c],f=!0;return!0};this.update=function(){e&&(c(e,!1),e=null),g.call(this)&&this.dispatch.change(b)}},a.utils.optionsFunc=function(b){return a.deprecated("nv.utils.optionsFunc"),b&&d3.map(b).forEach(function(a,b){"function"==typeof this[a]&&this[a](b)}.bind(this)),this},a.utils.calcTicksX=function(b,c){var d=1,e=0;for(e;e<c.length;e+=1){var f=c[e]&&c[e].values?c[e].values.length:0;d=f>d?f:d}return a.log("Requested number of ticks: ",b),a.log("Calculated max values to be: ",d),b=b>d?b=d-1:b,b=1>b?1:b,b=Math.floor(b),a.log("Calculating tick count as: ",b),b},a.utils.calcTicksY=function(b,c){return a.utils.calcTicksX(b,c)},a.utils.initOption=function(a,b){a[b]=a._calls&&a._calls[b]?a._calls[b]:function(c){return arguments.length?(a._options[b]=c,a):a._options[b]}},a.utils.initOptions=function(b){var c=Object.getOwnPropertyNames(b._options||{}),d=Object.getOwnPropertyNames(b._calls||{});c=c.concat(d);for(var e in c)a.utils.initOption(b,c[e])},a.utils.inheritOptionsD3=function(a,b,c){a._d3options=c.concat(a._d3options||[]),c.unshift(b),c.unshift(a),d3.rebind.apply(this,c)},a.utils.arrayUnique=function(a){return a.sort().filter(function(b,c){return!c||b!=a[c-1]})},a.utils.symbolMap=d3.map(),a.utils.symbol=function(){function b(b,e){var f=c.call(this,b,e),g=d.call(this,b,e);return-1!==d3.svg.symbolTypes.indexOf(f)?d3.svg.symbol().type(f).size(g)():a.utils.symbolMap.get(f)(g)}var c,d=64;return b.type=function(a){return arguments.length?(c=d3.functor(a),b):c},b.size=function(a){return arguments.length?(d=d3.functor(a),b):d},b},a.utils.inheritOptions=function(b,c){var d=Object.getOwnPropertyNames(c._options||{}),e=Object.getOwnPropertyNames(c._calls||{}),f=c._inherited||[],g=c._d3options||[],h=d.concat(e).concat(f).concat(g);h.unshift(c),h.unshift(b),d3.rebind.apply(this,h),b._inherited=a.utils.arrayUnique(d.concat(e).concat(f).concat(d).concat(b._inherited||[])),b._d3options=a.utils.arrayUnique(g.concat(b._d3options||[]))},a.utils.initSVG=function(a){a.classed({"nvd3-svg":!0})},a.models.axis=function(){"use strict";function b(g){return t.reset(),g.each(function(b){var g=d3.select(this);a.utils.initSVG(g);var q=g.selectAll("g.nv-wrap.nv-axis").data([b]),r=q.enter().append("g").attr("class","nvd3 nv-wrap nv-axis"),u=(r.append("g"),q.select("g"));null!==o?c.ticks(o):("top"==c.orient()||"bottom"==c.orient())&&c.ticks(Math.abs(d.range()[1]-d.range()[0])/100),u.watchTransition(t,"axis").call(c),s=s||c.scale();var v=c.tickFormat();null==v&&(v=s.tickFormat());var w=u.selectAll("text.nv-axislabel").data([h||null]);switch(w.exit().remove(),c.orient()){case"top":w.enter().append("text").attr("class","nv-axislabel");var x;if(x=d.range().length<2?0:2===d.range().length?d.range()[1]:d.range()[d.range().length-1]+(d.range()[1]-d.range()[0]),w.attr("text-anchor","middle").attr("y",0).attr("x",x/2),i){var y=q.selectAll("g.nv-axisMaxMin").data(d.domain());y.enter().append("g").attr("class","nv-axisMaxMin").append("text"),y.exit().remove(),y.attr("transform",function(b){return"translate("+a.utils.NaNtoZero(d(b))+",0)"}).select("text").attr("dy","-0.5em").attr("y",-c.tickPadding()).attr("text-anchor","middle").text(function(a){var b=v(a);return(""+b).match("NaN")?"":b}),y.watchTransition(t,"min-max top").attr("transform",function(b,c){return"translate("+a.utils.NaNtoZero(d.range()[c])+",0)"})}break;case"bottom":var z=p+36,A=30,B=u.selectAll("g").select("text");if(k%360){B.each(function(){var a=this.getBoundingClientRect().width;a>A&&(A=a)});var C=Math.abs(Math.sin(k*Math.PI/180)),z=(C?C*A:A)+30;B.attr("transform",function(){return"rotate("+k+" 0,0)"}).style("text-anchor",k%360>0?"start":"end")}w.enter().append("text").attr("class","nv-axislabel");var x;if(x=d.range().length<2?0:2===d.range().length?d.range()[1]:d.range()[d.range().length-1]+(d.range()[1]-d.range()[0]),w.attr("text-anchor","middle").attr("y",z).attr("x",x/2),i){var y=q.selectAll("g.nv-axisMaxMin").data([d.domain()[0],d.domain()[d.domain().length-1]]);y.enter().append("g").attr("class","nv-axisMaxMin").append("text"),y.exit().remove(),y.attr("transform",function(b){return"translate("+a.utils.NaNtoZero(d(b)+(n?d.rangeBand()/2:0))+",0)"}).select("text").attr("dy",".71em").attr("y",c.tickPadding()).attr("transform",function(){return"rotate("+k+" 0,0)"}).style("text-anchor",k?k%360>0?"start":"end":"middle").text(function(a){var b=v(a);return(""+b).match("NaN")?"":b}),y.watchTransition(t,"min-max 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a}),!i||"left"!==c.orient()&&"right"!==c.orient()||(u.selectAll("g").each(function(a){d3.select(this).select("text").attr("opacity",1),(d(a)<d.range()[1]+10||d(a)>d.range()[0]-10)&&((a>1e-10||-1e-10>a)&&d3.select(this).attr("opacity",0),d3.select(this).select("text").attr("opacity",0))}),d.domain()[0]==d.domain()[1]&&0==d.domain()[0]&&q.selectAll("g.nv-axisMaxMin").style("opacity",function(a,b){return b?0:1})),i&&("top"===c.orient()||"bottom"===c.orient())){var D=[];q.selectAll("g.nv-axisMaxMin").each(function(a,b){try{D.push(b?d(a)-this.getBoundingClientRect().width-4:d(a)+this.getBoundingClientRect().width+4)}catch(c){D.push(b?d(a)-4:d(a)+4)}}),u.selectAll("g").each(function(a){(d(a)<D[0]||d(a)>D[1])&&(a>1e-10||-1e-10>a?d3.select(this).remove():d3.select(this).select("text").remove())})}j&&u.selectAll(".tick").filter(function(){return!parseFloat(Math.round(1e5*this.__data__)/1e6)&&void 0!==this.__data__}).classed("zero",!0),s=d.copy()}),t.renderEnd("axis immediate"),b}var c=d3.svg.axis(),d=d3.scale.linear(),e={top:0,right:0,bottom:0,left:0},f=75,g=60,h=null,i=!0,j=!0,k=0,l=!0,m=!1,n=!1,o=null,p=0,q=250,r=d3.dispatch("renderEnd");c.scale(d).orient("bottom").tickFormat(function(a){return a});var s,t=a.utils.renderWatch(r,q);return b.axis=c,b.dispatch=r,b.options=a.utils.optionsFunc.bind(b),b._options=Object.create({},{axisLabelDistance:{get:function(){return p},set:function(a){p=a}},staggerLabels:{get:function(){return m},set:function(a){m=a}},rotateLabels:{get:function(){return k},set:function(a){k=a}},rotateYLabel:{get:function(){return l},set:function(a){l=a}},highlightZero:{get:function(){return j},set:function(a){j=a}},showMaxMin:{get:function(){return i},set:function(a){i=a}},axisLabel:{get:function(){return h},set:function(a){h=a}},height:{get:function(){return g},set:function(a){g=a}},ticks:{get:function(){return o},set:function(a){o=a}},width:{get:function(){return f},set:function(a){f=a}},margin:{get:function(){return e},set:function(a){e.top=void 0!==a.top?a.top:e.top,e.right=void 0!==a.right?a.right:e.right,e.bottom=void 0!==a.bottom?a.bottom:e.bottom,e.left=void 0!==a.left?a.left:e.left}},duration:{get:function(){return q},set:function(a){q=a,t.reset(q)}},scale:{get:function(){return d},set:function(e){d=e,c.scale(d),n="function"==typeof d.rangeBands,a.utils.inheritOptionsD3(b,d,["domain","range","rangeBand","rangeBands"])}}}),a.utils.initOptions(b),a.utils.inheritOptionsD3(b,c,["orient","tickValues","tickSubdivide","tickSize","tickPadding","tickFormat"]),a.utils.inheritOptionsD3(b,d,["domain","range","rangeBand","rangeBands"]),b},a.models.bullet=function(){"use strict";function b(d){return d.each(function(b,d){var o=m-c.left-c.right,r=n-c.top-c.bottom,s=d3.select(this);a.utils.initSVG(s);{var t=f.call(this,b,d).slice().sort(d3.descending),u=g.call(this,b,d).slice().sort(d3.descending),v=h.call(this,b,d).slice().sort(d3.descending),w=i.call(this,b,d).slice(),x=j.call(this,b,d).slice(),y=k.call(this,b,d).slice(),z=d3.scale.linear().domain(d3.extent(d3.merge([l,t]))).range(e?[o,0]:[0,o]);this.__chart__||d3.scale.linear().domain([0,1/0]).range(z.range())}this.__chart__=z;var A=d3.min(t),B=d3.max(t),C=t[1],D=s.selectAll("g.nv-wrap.nv-bullet").data([b]),E=D.enter().append("g").attr("class","nvd3 nv-wrap nv-bullet"),F=E.append("g"),G=D.select("g");F.append("rect").attr("class","nv-range nv-rangeMax"),F.append("rect").attr("class","nv-range nv-rangeAvg"),F.append("rect").attr("class","nv-range nv-rangeMin"),F.append("rect").attr("class","nv-measure"),F.append("path").attr("class","nv-markerTriangle"),D.attr("transform","translate("+c.left+","+c.top+")");var H=function(a){return Math.abs(z(a)-z(0))},I=function(a){return z(0>a?a:0)};G.select("rect.nv-rangeMax").attr("height",r).attr("width",H(B>0?B:A)).attr("x",I(B>0?B:A)).datum(B>0?B:A),G.select("rect.nv-rangeAvg").attr("height",r).attr("width",H(C)).attr("x",I(C)).datum(C),G.select("rect.nv-rangeMin").attr("height",r).attr("width",H(B)).attr("x",I(B)).attr("width",H(B>0?A:B)).attr("x",I(B>0?A:B)).datum(B>0?A:B),G.select("rect.nv-measure").style("fill",p).attr("height",r/3).attr("y",r/3).attr("width",0>v?z(0)-z(v[0]):z(v[0])-z(0)).attr("x",I(v)).on("mouseover",function(){q.elementMouseover({value:v[0],label:y[0]||"Current",pos:[z(v[0]),r/2]})}).on("mouseout",function(){q.elementMouseout({value:v[0],label:y[0]||"Current"})});var J=r/6;u[0]?G.selectAll("path.nv-markerTriangle").attr("transform",function(){return"translate("+z(u[0])+","+r/2+")"}).attr("d","M0,"+J+"L"+J+","+-J+" 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b.dispatch=q,b.options=a.utils.optionsFunc.bind(b),b._options=Object.create({},{ranges:{get:function(){return f},set:function(a){f=a}},markers:{get:function(){return g},set:function(a){g=a}},measures:{get:function(){return h},set:function(a){h=a}},forceX:{get:function(){return l},set:function(a){l=a}},width:{get:function(){return m},set:function(a){m=a}},height:{get:function(){return n},set:function(a){n=a}},tickFormat:{get:function(){return o},set:function(a){o=a}},margin:{get:function(){return c},set:function(a){c.top=void 0!==a.top?a.top:c.top,c.right=void 0!==a.right?a.right:c.right,c.bottom=void 0!==a.bottom?a.bottom:c.bottom,c.left=void 0!==a.left?a.left:c.left}},orient:{get:function(){return d},set:function(a){d=a,e="right"==d||"bottom"==d}},color:{get:function(){return p},set:function(b){p=a.utils.getColor(b)}}}),a.utils.initOptions(b),b},a.models.bulletChart=function(){"use strict";function b(d){return d.each(function(n,r){var s=d3.select(this);a.utils.initSVG(s);var t=(j||parseInt(s.style("width"))||960)-f.left-f.right,u=k-f.top-f.bottom,v=this;if(b.update=function(){b(d)},b.container=this,!n||!g.call(this,n,r)){var w=s.selectAll(".nv-noData").data([o]);return w.enter().append("text").attr("class","nvd3 nv-noData").attr("dy","-.7em").style("text-anchor","middle"),w.attr("x",f.left+t/2).attr("y",18+f.top+u/2).text(function(a){return a}),b}s.selectAll(".nv-noData").remove();var x=g.call(this,n,r).slice().sort(d3.descending),y=h.call(this,n,r).slice().sort(d3.descending),z=i.call(this,n,r).slice().sort(d3.descending),A=s.selectAll("g.nv-wrap.nv-bulletChart").data([n]),B=A.enter().append("g").attr("class","nvd3 nv-wrap nv-bulletChart"),C=B.append("g"),D=A.select("g");C.append("g").attr("class","nv-bulletWrap"),C.append("g").attr("class","nv-titles"),A.attr("transform","translate("+f.left+","+f.top+")");var 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L=d3.transition(J).attr("transform",function(a){return"translate("+E(a)+",0)"}).style("opacity",1);L.select("line").attr("y1",u).attr("y2",7*u/6),L.select("text").attr("y",7*u/6),d3.transition(J.exit()).attr("transform",function(a){return"translate("+E(a)+",0)"}).style("opacity",1e-6).remove(),p.on("tooltipShow",function(a){a.key=n.title,m&&q(a,v.parentNode)})}),d3.timer.flush(),b}var c=a.models.bullet(),d="left",e=!1,f={top:5,right:40,bottom:20,left:120},g=function(a){return a.ranges},h=function(a){return a.markers?a.markers:[0]},i=function(a){return a.measures},j=null,k=55,l=null,m=!0,n=function(a,b,c){return"<h3>"+b+"</h3><p>"+c+"</p>"},o="No Data Available.",p=d3.dispatch("tooltipShow","tooltipHide"),q=function(c,d){var e=c.pos[0]+(d.offsetLeft||0)+f.left,g=c.pos[1]+(d.offsetTop||0)+f.top,h=n(c.key,c.label,c.value,c,b);a.tooltip.show([e,g],h,c.value<0?"e":"w",null,d)};return 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a.disabled=!0,a}),a.disabled=!1,e.style(a.style),x.style=e.style(),A.stateChange(x),b.update())}),j.dispatch.on("elementMousemove",function(c){e.clearHighlights();var d,h,i,l=[];if(v.filter(function(a,b){return a.seriesIndex=b,!a.disabled}).forEach(function(f,g){h=a.interactiveBisect(f.values,c.pointXValue,b.x()),e.highlightPoint(g,h,!0);var j=f.values[h];if("undefined"!=typeof j){"undefined"==typeof d&&(d=j),"undefined"==typeof i&&(i=b.xScale()(b.x()(j,h)));var k="expand"==e.style()?j.display.y:b.y()(j,h);l.push({key:f.key,value:k,color:n(f,f.seriesIndex),stackedValue:j.display})}}),l.reverse(),l.length>2){var m=b.yScale().invert(c.mouseY),o=null;l.forEach(function(a,b){m=Math.abs(m);var c=Math.abs(a.stackedValue.y0),d=Math.abs(a.stackedValue.y);return m>=c&&d+c>=m?void(o=b):void 0}),null!=o&&(l[o].highlight=!0)}var p=f.tickFormat()(b.x()(d,h)),q="expand"==e.style()?function(a){return d3.format(".1%")(a)}:function(a){return g.tickFormat()(a)};j.tooltip.position({left:i+k.left,top:c.mouseY+k.top}).chartContainer(K.parentNode).enabled(u).valueFormatter(q).data({value:p,series:l})(),j.renderGuideLine(i)}),j.dispatch.on("elementMouseout",function(){A.tooltipHide(),e.clearHighlights()}),A.on("tooltipShow",function(a){u&&H(a,K.parentNode)}),A.on("changeState",function(a){"undefined"!=typeof a.disabled&&v.length===a.disabled.length&&(v.forEach(function(b,c){b.disabled=a.disabled[c]}),x.disabled=a.disabled),"undefined"!=typeof a.style&&(e.style(a.style),G=a.style),b.update()})}),F.renderEnd("stacked Area chart immediate"),b}var c,d,e=a.models.stackedArea(),f=a.models.axis(),g=a.models.axis(),h=a.models.legend(),i=a.models.legend(),j=a.interactiveGuideline(),k={top:30,right:25,bottom:50,left:60},l=null,m=null,n=a.utils.defaultColor(),o=!0,p=!0,q=!0,r=!0,s=!1,t=!1,u=!0,v=function(a,b,c){return"<h3>"+a+"</h3><p>"+c+" on "+b+"</p>"},w=d3.format(",.2f"),x=a.utils.state(),y=null,z="No Data 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e.dispatch.on("tooltipShow",function(a){a.pos=[a.pos[0]+k.left,a.pos[1]+k.top],A.tooltipShow(a)}),e.dispatch.on("tooltipHide",function(a){A.tooltipHide(a)}),A.on("tooltipHide",function(){u&&a.tooltip.cleanup()}),b.dispatch=A,b.stacked=e,b.legend=h,b.controls=i,b.xAxis=f,b.yAxis=g,b.interactiveLayer=j,g.setTickFormat=g.tickFormat,b.dispatch=A,b.options=a.utils.optionsFunc.bind(b),b._options=Object.create({},{width:{get:function(){return l},set:function(a){l=a}},height:{get:function(){return m},set:function(a){m=a}},showLegend:{get:function(){return p},set:function(a){p=a}},showXAxis:{get:function(){return q},set:function(a){q=a}},showYAxis:{get:function(){return r},set:function(a){r=a}},tooltips:{get:function(){return u},set:function(a){u=a}},tooltipContent:{get:function(){return v},set:function(a){v=a}},defaultState:{get:function(){return y},set:function(a){y=a}},noData:{get:function(){return z},set:function(a){z=a}},showControls:{get:function(){return o},set:function(a){o=a}},controlLabels:{get:function(){return D},set:function(a){D=a}},yAxisTickFormat:{get:function(){return w},set:function(a){w=a}},margin:{get:function(){return k},set:function(a){k.top=void 0!==a.top?a.top:k.top,k.right=void 0!==a.right?a.right:k.right,k.bottom=void 0!==a.bottom?a.bottom:k.bottom,k.left=void 0!==a.left?a.left:k.left}},duration:{get:function(){return E},set:function(a){E=a,F.reset(E),e.duration(E),f.duration(E),g.duration(E)}},color:{get:function(){return n},set:function(b){n=a.utils.getColor(b),h.color(n),e.color(n)}},rightAlignYAxis:{get:function(){return s},set:function(a){s=a,g.orient(s?"right":"left")}},useInteractiveGuideline:{get:function(){return t},set:function(a){t=!!a,a&&(b.interactive(!1),b.useVoronoi(!1))}}}),a.utils.inheritOptions(b,e),a.utils.initOptions(b),b},a.version="1.7.1"}();

quiz.js

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://www.javascriptsource.com -->

<!-- Begin
// Insert number of questions
var numQues = 1;

// Insert number of choices in each question
var numChoi = 4;

// Insert number of questions displayed in answer area
var answers = new Array(1);

// Insert answers to questions
answers[0] = "All ABC High's 9th grade students in the current school year";


// Do not change anything below here ...
function checkAnswer(form) {
  var score = 0;
  var currElt;
  var currSelection;
  for (i=0; i<numQues; i++) {
    currElt = i*numChoi;
    for (j=0; j<numChoi; j++) {
      currSelection = form.elements[currElt + j];
      if (currSelection.checked) {
        if (currSelection.value == answers[i]) {
          score++;
 	        document.getElementById("quizResults").innerHTML = "<font color=blue><b>Correct! :-)</b></font> <br>Since we want to compare Mary's score to her 9th grade schoolmates in order to find out if she was among the top ranked students, the norm group is all ABC High's 9th grade students in the current school year.";		
          break;
        } 
	      else {
	        document.getElementById("quizResults").innerHTML = "<font color=red><b>Incorrect :-( </b></font><br><b>Try again!</b> Remember that prizes will be given to 9th grade students at the 95th percentile in Math I at ABC High.";		
          break;	
	      }
	    }
    }
  }
  
};
//  End -->

raw_score_chart.js

var margin = {top: 20, right: 20, bottom: 60, left: 60},
    width = 860 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var x = d3.scale.ordinal()
    .rangeRoundBands([0, width], 0.1);

var y = d3.scale.linear()
    .range([height, 0]);   

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left");

var tip = d3.tip()
  .attr('class', 'd3-tip')
  .offset([-10, 0])
  .html(function(d) {
    return "<span style='color:white; font-size:12px'>" + d.variable + "</span>";
  });

var svgRaw = d3.select(".rawScoreGraph").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");


svgRaw.call(tip);

//create line of values
var valueline = d3.svg.line()
  .x(function(d) { return x(d.name); })
  .y(function(d) { return y(d.variable); });

var tsv;

var colors = d3.scale.category10();

d3.tsv("classroom.tsv", function(error, data){

  if (error) throw error;

  tsv = data;

  data.forEach(function(d){ 
      d.variable = +d.score;
      d.name= d.name;
  });

  x.domain(data.map(function(d) { return d.name; }));
  y.domain ([0,50]);
  //y.domain([d3.min(data, function(d) { return d.variable; }), d3.max(data, function(d) { return d.variable; })]);

  svgRaw.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
    .append("text")
      .attr("class", "xaxis_label")
      .attr("y", 45)
      .attr("dx", "30.71em")
      .style("text-anchor", "middle")
      .text("Student Name");

  svgRaw.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("class", "yaxis_label")
      .attr("transform", "rotate(-90)")
      .attr("y", 0 - margin.left)
      .attr("x", 0 - (height / 2))
      .attr("dy", "2em")
      .style("text-anchor", "middle")
      .text("Number Correct");
  
  var barRaw = svgRaw.selectAll(".bar")
      .data(data)      
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.name); })
      .attr("width", x.rangeBand())
      .attr("y", function(d) { return y(d.variable); })
      .attr("height", function(d) { return height - y(d.variable); })     
      .on('mouseover', tip.show)
      .on('mouseout', tip.hide)
      .attr("fill",function(d,i){
        if (d.name == 'Mary') { return 'purple'; }
        else {return colors(0);}  
      }) 
      //.attr("fill",function(d,i){return colors(i)} ) 
      ;


  // The following code doesn't work :-( )
  //bar.append("text")
  //    .text(function(d) { return d.variable; })
  //    .attr("text-anchor", "middle")
  //    .attr("x", x.rangeBand()/2 )
  //    .attr("y", 1)
  //    .attr("font-family", "sans-serif")
  //    .attr("font-size", "10px")
  //    .attr("fill", "white")   ;

});


//update data from combobox onChange
function updateData() {
  
  var value = document.getElementById('rawscore').selectedOptions[0].id;

  var scale = +document.getElementById('rawscore').selectedOptions[0].value;

  var scoreType = document.getElementById('rawscore').selectedOptions[0].text;

  var index = document.getElementById('rawscore').selectedIndex;

  //window.alert(index);

  var data = [];      
  tsv.forEach(function(d){ 
    data.push({variable: +d[value], name: d['name']});
  });

  x.domain(data.map(function(d) { return d.name; }));

  y.domain ([0,scale]);
  //y.domain([d3.min(data, function(d) { return d.variable; }), d3.max(data, function(d) { return d.variable; })]);
  

    // Select the section we want to apply our changes to
  var trans = d3.select(".rawScoreChart").transition();
    
    // Make the changes
  var transition = svgRaw.transition().duration(1000),
      delay = function(d, i) { return i * 100; };
    
  svgRaw.selectAll(".bar")
     .data(data)
     .transition().duration(1000)
     .attr("x", function(d) { return x(d.name); })
     .attr("y", function(d) { return y(d.variable); })
     .attr("height", function(d) { return height - y(d.variable); })
     //.attr("fill",function(d){return colors(index)} ) 
     .attr("fill",function(d,i){
        if (d.name == 'Mary') { return 'purple'; }
        else {return colors(index);}  
      })
  ;
    
    transition.select(".y.axis") // change the y axis
      .call(yAxis);

    transition.select(".yaxis_label")
       .text(scoreType);
};

school.tsv

sprintf.js

/**
sprintf() for JavaScript 0.7-beta1
http://www.diveintojavascript.com/projects/javascript-sprintf

Copyright (c) Alexandru Marasteanu <alexaholic [at) gmail (dot] com>
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of sprintf() for JavaScript nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL Alexandru Marasteanu BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


Changelog:
2010.09.06 - 0.7-beta1
  - features: vsprintf, support for named placeholders
  - enhancements: format cache, reduced global namespace pollution

2010.05.22 - 0.6:
 - reverted to 0.4 and fixed the bug regarding the sign of the number 0
 Note:
 Thanks to Raphael Pigulla <raph (at] n3rd [dot) org> (http://www.n3rd.org/)
 who warned me about a bug in 0.5, I discovered that the last update was
 a regress. I appologize for that.

2010.05.09 - 0.5:
 - bug fix: 0 is now preceeded with a + sign
 - bug fix: the sign was not at the right position on padded results (Kamal Abdali)
 - switched from GPL to BSD license

2007.10.21 - 0.4:
 - unit test and patch (David Baird)

2007.09.17 - 0.3:
 - bug fix: no longer throws exception on empty paramenters (Hans Pufal)

2007.09.11 - 0.2:
 - feature: added argument swapping

2007.04.03 - 0.1:
 - initial release
**/

var sprintf = (function() {
	function get_type(variable) {
		return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase();
	}
	function str_repeat(input, multiplier) {
		for (var output = []; multiplier > 0; output[--multiplier] = input) {/* do nothing */}
		return output.join('');
	}

	var str_format = function() {
		if (!str_format.cache.hasOwnProperty(arguments[0])) {
			str_format.cache[arguments[0]] = str_format.parse(arguments[0]);
		}
		return str_format.format.call(null, str_format.cache[arguments[0]], arguments);
	};

	str_format.format = function(parse_tree, argv) {
		var cursor = 1, tree_length = parse_tree.length, node_type = '', arg, output = [], i, k, match, pad, pad_character, pad_length;
		for (i = 0; i < tree_length; i++) {
			node_type = get_type(parse_tree[i]);
			if (node_type === 'string') {
				output.push(parse_tree[i]);
			}
			else if (node_type === 'array') {
				match = parse_tree[i]; // convenience purposes only
				if (match[2]) { // keyword argument
					arg = argv[cursor];
					for (k = 0; k < match[2].length; k++) {
						if (!arg.hasOwnProperty(match[2][k])) {
							throw(sprintf('[sprintf] property "%s" does not exist', match[2][k]));
						}
						arg = arg[match[2][k]];
					}
				}
				else if (match[1]) { // positional argument (explicit)
					arg = argv[match[1]];
				}
				else { // positional argument (implicit)
					arg = argv[cursor++];
				}

				if (/[^s]/.test(match[8]) && (get_type(arg) != 'number')) {
					throw(sprintf('[sprintf] expecting number but found %s', get_type(arg)));
				}
				switch (match[8]) {
					case 'b': arg = arg.toString(2); break;
					case 'c': arg = String.fromCharCode(arg); break;
					case 'd': arg = parseInt(arg, 10); break;
					case 'e': arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential(); break;
					case 'f': arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg); break;
					case 'o': arg = arg.toString(8); break;
					case 's': arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg); break;
					case 'u': arg = Math.abs(arg); break;
					case 'x': arg = arg.toString(16); break;
					case 'X': arg = arg.toString(16).toUpperCase(); break;
				}
				arg = (/[def]/.test(match[8]) && match[3] && arg >= 0 ? '+'+ arg : arg);
				pad_character = match[4] ? match[4] == '0' ? '0' : match[4].charAt(1) : ' ';
				pad_length = match[6] - String(arg).length;
				pad = match[6] ? str_repeat(pad_character, pad_length) : '';
				output.push(match[5] ? arg + pad : pad + arg);
			}
		}
		return output.join('');
	};

	str_format.cache = {};

	str_format.parse = function(fmt) {
		var _fmt = fmt, match = [], parse_tree = [], arg_names = 0;
		while (_fmt) {
			if ((match = /^[^\x25]+/.exec(_fmt)) !== null) {
				parse_tree.push(match[0]);
			}
			else if ((match = /^\x25{2}/.exec(_fmt)) !== null) {
				parse_tree.push('%');
			}
			else if ((match = /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fosuxX])/.exec(_fmt)) !== null) {
				if (match[2]) {
					arg_names |= 1;
					var field_list = [], replacement_field = match[2], field_match = [];
					if ((field_match = /^([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
						field_list.push(field_match[1]);
						while ((replacement_field = replacement_field.substring(field_match[0].length)) !== '') {
							if ((field_match = /^\.([a-z_][a-z_\d]*)/i.exec(replacement_field)) !== null) {
								field_list.push(field_match[1]);
							}
							else if ((field_match = /^\[(\d+)\]/.exec(replacement_field)) !== null) {
								field_list.push(field_match[1]);
							}
							else {
								throw('[sprintf] huh?');
							}
						}
					}
					else {
						throw('[sprintf] huh?');
					}
					match[2] = field_list;
				}
				else {
					arg_names |= 2;
				}
				if (arg_names === 3) {
					throw('[sprintf] mixing positional and named placeholders is not (yet) supported');
				}
				parse_tree.push(match);
			}
			else {
				throw('[sprintf] huh?');
			}
			_fmt = _fmt.substring(match[0].length);
		}
		return parse_tree;
	};

	return str_format;
})();

var vsprintf = function(fmt, argv) {
	argv.unshift(fmt);
	return sprintf.apply(null, argv);
};

styles.css

html, body {
  margin: auto;
  color: #333;
  font-family: Verdana, Geneva, sans-serif;
  font: 18px;      
}
     
#CritNormModule {
  width: 70%; 
  margin:0 auto;
}

.bar:hover {
    fill: brown;
}

.barRaw:hover {
    fill: brown;
}

.axis text {
    font: 12px sans-serif;
  }

.bar rect {
  fill: steelblue;
  shape-rendering: crispEdges;
}

.barRaw rect {
  shape-rendering: crispEdges;
}

.bar text {
  fill: #fff;
  font: 10px sans-serif;
}

.barRaw text {
  fill: #fff;
  font: 10px sans-serif;
}

.axis path, 
.axis line {
  fill: none;
  stroke: #000;
  stroke-width: 1;
  shape-rendering: crispEdges;
}

path {
stroke: steelblue;
stroke-width: 2;
fill: none;
}

label {
  position: absolute;
  top: 10px;
  right: 10px;
}

button {
  font-family: Verdana, Geneva, sans-serif;
  font: 12px;  
}


.d3-tip {
  line-height: 1;
  font-weight: bold;
  padding: 10px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  border-radius: 2px;
}

/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
  box-sizing: border-box;
  display: inline;
  font-size: 10px;
  width: 100%;
  line-height: 1;
  color: rgba(0, 0, 0, 0.8);
  content: "\25BC";
  position: absolute;
  text-align: center;
}

/* Style northward tooltips differently */
.d3-tip.n:after {
  margin: -1px 0 0 0;
  top: 100%;
  left: 0;
}

.slider-width
{
    width: 300px;
}

Tangle.js

//
//  Tangle.js
//  Tangle 0.1.0
//
//  Created by Bret Victor on 5/2/10.
//  (c) 2011 Bret Victor.  MIT open-source license.
//
//  ------ model ------
//
//  var tangle = new Tangle(rootElement, model);
//  tangle.setModel(model);
//
//  ------ variables ------
//
//  var value = tangle.getValue(variableName);
//  tangle.setValue(variableName, value);
//  tangle.setValues({ variableName:value, variableName:value });
//
//  ------ UI components ------
//
//  Tangle.classes.myClass = {
//     initialize: function (element, options, tangle, variable) { ... },
//     update: function (element, value) { ... }
//  };
//  Tangle.formats.myFormat = function (value) { return "..."; };
//

var Tangle = this.Tangle = function (rootElement, modelClass) {

    var tangle = this;
    tangle.element = rootElement;
    tangle.setModel = setModel;
    tangle.getValue = getValue;
    tangle.setValue = setValue;
    tangle.setValues = setValues;

    var _model;
    var _nextSetterID = 0;
    var _setterInfosByVariableName = {};   //  { varName: { setterID:7, setter:function (v) { } }, ... }
    var _varargConstructorsByArgCount = [];


    //----------------------------------------------------------
    //
    // construct

    initializeElements();
    setModel(modelClass);
    return tangle;


    //----------------------------------------------------------
    //
    // elements

    function initializeElements() {
        var elements = rootElement.getElementsByTagName("*");
        var interestingElements = [];
        
        // build a list of elements with class or data-var attributes
        
        for (var i = 0, length = elements.length; i < length; i++) {
            var element = elements[i];
            if (element.getAttribute("class") || element.getAttribute("data-var")) {
                interestingElements.push(element);
            }
        }

        // initialize interesting elements in this list.  (Can't traverse "elements"
        // directly, because elements is "live", and views that change the node tree
        // will change elements mid-traversal.)
        
        for (var i = 0, length = interestingElements.length; i < length; i++) {
            var element = interestingElements[i];
            
            var varNames = null;
            var varAttribute = element.getAttribute("data-var");
            if (varAttribute) { varNames = varAttribute.split(" "); }

            var views = null;
            var classAttribute = element.getAttribute("class");
            if (classAttribute) {
                var classNames = classAttribute.split(" ");
                views = getViewsForElement(element, classNames, varNames);
            }
            
            if (!varNames) { continue; }
            
            var didAddSetter = false;
            if (views) {
                for (var j = 0; j < views.length; j++) {
                    if (!views[j].update) { continue; }
                    addViewSettersForElement(element, varNames, views[j]);
                    didAddSetter = true;
                }
            }
            
            if (!didAddSetter) {
                var formatAttribute = element.getAttribute("data-format");
                var formatter = getFormatterForFormat(formatAttribute, varNames);
                addFormatSettersForElement(element, varNames, formatter);
            }
        }
    }
            
    function getViewsForElement(element, classNames, varNames) {   // initialize classes
        var views = null;
        
        for (var i = 0, length = classNames.length; i < length; i++) {
            var clas = Tangle.classes[classNames[i]];
            if (!clas) { continue; }
            
            var options = getOptionsForElement(element);
            var args = [ element, options, tangle ];
            if (varNames) { args = args.concat(varNames); }
            
            var view = constructClass(clas, args);
            
            if (!views) { views = []; }
            views.push(view);
        }
        
        return views;
    }
    
    function getOptionsForElement(element) {   // might use dataset someday
        var options = {};

        var attributes = element.attributes;
        var regexp = /^data-[\w\-]+$/;

        for (var i = 0, length = attributes.length; i < length; i++) {
            var attr = attributes[i];
            var attrName = attr.name;
            if (!attrName || !regexp.test(attrName)) { continue; }
            
            options[attrName.substr(5)] = attr.value;
        }
         
        return options;   
    }
    
    function constructClass(clas, args) {
        if (typeof clas !== "function") {  // class is prototype object
            var View = function () { };
            View.prototype = clas;
            var view = new View();
            if (view.initialize) { view.initialize.apply(view,args); }
            return view;
        }
        else {  // class is constructor function, which we need to "new" with varargs (but no built-in way to do so)
            var ctor = _varargConstructorsByArgCount[args.length];
            if (!ctor) {
                var ctorArgs = [];
                for (var i = 0; i < args.length; i++) { ctorArgs.push("args[" + i + "]"); }
                var ctorString = "(function (clas,args) { return new clas(" + ctorArgs.join(",") + "); })";
                ctor = eval(ctorString);   // nasty
                _varargConstructorsByArgCount[args.length] = ctor;   // but cached
            }
            return ctor(clas,args);
        }
    }
    

    //----------------------------------------------------------
    //
    // formatters

    function getFormatterForFormat(formatAttribute, varNames) {
        if (!formatAttribute) { formatAttribute = "default"; }

        var formatter = getFormatterForCustomFormat(formatAttribute, varNames);
        if (!formatter) { formatter = getFormatterForSprintfFormat(formatAttribute, varNames); }
        if (!formatter) { log("Tangle: unknown format: " + formatAttribute); formatter = getFormatterForFormat(null,varNames); }

        return formatter;
    }
        
    function getFormatterForCustomFormat(formatAttribute, varNames) {
        var components = formatAttribute.split(" ");
        var formatName = components[0];
        if (!formatName) { return null; }
        
        var format = Tangle.formats[formatName];
        if (!format) { return null; }
        
        var formatter;
        var params = components.slice(1);
        
        if (varNames.length <= 1 && params.length === 0) {  // one variable, no params
            formatter = format;
        }
        else if (varNames.length <= 1) {  // one variable with params
            formatter = function (value) {
                var args = [ value ].concat(params);
                return format.apply(null, args);
            };
        }
        else {  // multiple variables
            formatter = function () {
                var values = getValuesForVariables(varNames);
                var args = values.concat(params);
                return format.apply(null, args);
            };
        }
        return formatter;
    }
    
    function getFormatterForSprintfFormat(formatAttribute, varNames) {
        if (!sprintf || !formatAttribute.test(/\%/)) { return null; }

        var formatter;
        if (varNames.length <= 1) {  // one variable
            formatter = function (value) {
                return sprintf(formatAttribute, value);
            };
        }
        else {
            formatter = function (value) {  // multiple variables
                var values = getValuesForVariables(varNames);
                var args = [ formatAttribute ].concat(values);
                return sprintf.apply(null, args);
            };
        }
        return formatter;
    }

    
    //----------------------------------------------------------
    //
    // setters
    
    function addViewSettersForElement(element, varNames, view) {   // element has a class with an update method
        var setter;
        if (varNames.length <= 1) {
            setter = function (value) { view.update(element, value); };
        }
        else {
            setter = function () {
                var values = getValuesForVariables(varNames);
                var args = [ element ].concat(values);
                view.update.apply(view,args);
            };
        }

        addSetterForVariables(setter, varNames);
    }

    function addFormatSettersForElement(element, varNames, formatter) {  // tangle is injecting a formatted value itself
        var span = null;
        var setter = function (value) {
            if (!span) { 
                span = document.createElement("span");
                element.insertBefore(span, element.firstChild);
            }
            span.innerHTML = formatter(value);
        };

        addSetterForVariables(setter, varNames);
    }
    
    function addSetterForVariables(setter, varNames) {
        var setterInfo = { setterID:_nextSetterID, setter:setter };
        _nextSetterID++;

        for (var i = 0; i < varNames.length; i++) {
            var varName = varNames[i];
            if (!_setterInfosByVariableName[varName]) { _setterInfosByVariableName[varName] = []; }
            _setterInfosByVariableName[varName].push(setterInfo);
        }
    }

    function applySettersForVariables(varNames) {
        var appliedSetterIDs = {};  // remember setterIDs that we've applied, so we don't call setters twice
    
        for (var i = 0, ilength = varNames.length; i < ilength; i++) {
            var varName = varNames[i];
            var setterInfos = _setterInfosByVariableName[varName];
            if (!setterInfos) { continue; }
            
            var value = _model[varName];
            
            for (var j = 0, jlength = setterInfos.length; j < jlength; j++) {
                var setterInfo = setterInfos[j];
                if (setterInfo.setterID in appliedSetterIDs) { continue; }  // if we've already applied this setter, move on
                appliedSetterIDs[setterInfo.setterID] = true;
                
                setterInfo.setter(value);
            }
        }
    }
    

    //----------------------------------------------------------
    //
    // variables

    function getValue(varName) {
        var value = _model[varName];
        if (value === undefined) { log("Tangle: unknown variable: " + varName);  return 0; }
        return value;
    }

    function setValue(varName, value) {
        var obj = {};
        obj[varName] = value;
        setValues(obj);
    }

    function setValues(obj) {
        var changedVarNames = [];

        for (var varName in obj) {
            var value = obj[varName];
            var oldValue = _model[varName];
            if (oldValue === undefined) { log("Tangle: setting unknown variable: " + varName);  continue; }
            if (oldValue === value) { continue; }  // don't update if new value is the same

            _model[varName] = value;
            changedVarNames.push(varName);
        }
        
        if (changedVarNames.length) {
            applySettersForVariables(changedVarNames);
            updateModel();
        }
    }
    
    function getValuesForVariables(varNames) {
        var values = [];
        for (var i = 0, length = varNames.length; i < length; i++) {
            values.push(getValue(varNames[i]));
        }
        return values;
    }

                    
    //----------------------------------------------------------
    //
    // model

    function setModel(modelClass) {
        var ModelClass = function () { };
        ModelClass.prototype = modelClass;
        _model = new ModelClass;

        updateModel(true);  // initialize and update
    }
    
    function updateModel(shouldInitialize) {
        var ShadowModel = function () {};  // make a shadow object, so we can see exactly which properties changed
        ShadowModel.prototype = _model;
        var shadowModel = new ShadowModel;
        
        if (shouldInitialize) { shadowModel.initialize(); }
        shadowModel.update();
        
        var changedVarNames = [];
        for (var varName in shadowModel) {
            if (!shadowModel.hasOwnProperty(varName)) { continue; }
            if (_model[varName] === shadowModel[varName]) { continue; }
            
            _model[varName] = shadowModel[varName];
            changedVarNames.push(varName);
        }
        
        applySettersForVariables(changedVarNames);
    }


    //----------------------------------------------------------
    //
    // debug

    function log (msg) {
        if (window.console) { window.console.log(msg); }
    }

};  // end of Tangle


//----------------------------------------------------------
//
// components

Tangle.classes = {};
Tangle.formats = {};

Tangle.formats["default"] = function (value) { return "" + value; };

TangleKit.css

/*
 *  TangleKit.css
 *  Tangle 0.1.0
 *
 *  Created by Bret Victor on 6/10/11.
 *  (c) 2011 Bret Victor.  MIT open-source license.
 *
 */


/* cursor */

.TKCursorDragHorizontal {
	cursor: pointer;
	cursor: move;
	cursor: col-resize;
}


/* TKToggle */

.TKToggle {
	color: #46f;
	border-bottom: 1px dashed #46f;
	cursor: pointer;
}


/* TKAdjustableNumber */

.TKAdjustableNumber {
	position:relative;
	color: #46f;
	border-bottom: 1px dashed #46f;
}

.TKAdjustableNumberHover {
}

.TKAdjustableNumberDown {
	color: #00c;
	border-bottom: 1px dashed #00c;
}

.TKAdjustableNumberHelp {
	position:absolute;
	color: #00f;
	font: 9px "Helvetica-Neue", "Arial", sans-serif;
}

TangleKit.js

//
//  TangleKit.js
//  Tangle 0.1.0
//
//  Created by Bret Victor on 6/10/11.
//  (c) 2011 Bret Victor.  MIT open-source license.
//


(function () {


//----------------------------------------------------------
//
//  TKIf
//
//  Shows the element if value is true (non-zero), hides if false.
//
//  Attributes:  data-invert (optional):  show if false instead.

Tangle.classes.TKIf = {
    
    initialize: function (element, options, tangle, variable) {
        this.isInverted = !!options.invert;
    },
    
    update: function (element, value) {
        if (this.isInverted) { value = !value; }
        element.style.display = !value ? "none" : "inline";   // todo, block or inline?
    }
};


//----------------------------------------------------------
//
//  TKSwitch
//
//  Shows the element's nth child if value is n.
//
//  False or true values will show the first or second child respectively.

Tangle.classes.TKSwitch = {

    update: function (element, value) {
        element.getChildren().each( function (child, index) {
            child.style.display = (index != value) ? "none" : "inline";
        });
    }
};


//----------------------------------------------------------
//
//  TKSwitchPositiveNegative
//
//  Shows the element's first child if value is positive or zero.
//  Shows the element's second child if value is negative.

Tangle.classes.TKSwitchPositiveNegative = {

    update: function (element, value) {
        Tangle.classes.TKSwitch.update(element, value < 0);
    }
};


//----------------------------------------------------------
//
//  TKToggle
//
//  Click to toggle value between 0 and 1.

Tangle.classes.TKToggle = {

    initialize: function (element, options, tangle, variable) {
        element.addEvent("click", function (event) {
            var isActive = tangle.getValue(variable);
            tangle.setValue(variable, isActive ? 0 : 1);
        });
    }
};


//----------------------------------------------------------
//
//  TKNumberField
//
//  An input box where a number can be typed in.
//
//  Attributes:  data-size (optional): width of the box in characters

Tangle.classes.TKNumberField = {

    initialize: function (element, options, tangle, variable) {
        this.input = new Element("input", {
    		type: "text",
    		"class":"TKNumberFieldInput",
    		size: options.size || 6
        }).inject(element, "top");
        
        var inputChanged = (function () {
            var value = this.getValue();
            tangle.setValue(variable, value);
        }).bind(this);
        
        this.input.addEvent("keyup",  inputChanged);
        this.input.addEvent("blur",   inputChanged);
        this.input.addEvent("change", inputChanged);
	},
	
	getValue: function () {
        var value = parseFloat(this.input.get("value"));
        return isNaN(value) ? 0 : value;
	},
	
	update: function (element, value) {
	    var currentValue = this.getValue();
	    if (value !== currentValue) { this.input.set("value", "" + value); }
	}
};


//----------------------------------------------------------
//
//  TKAdjustableNumber
//
//  Drag a number to adjust.
//
//  Attributes:  data-min (optional): minimum value
//               data-max (optional): maximum value
//               data-step (optional): granularity of adjustment (can be fractional)

var isAnyAdjustableNumberDragging = false;  // hack for dragging one value over another one

Tangle.classes.TKAdjustableNumber = {

    initialize: function (element, options, tangle, variable) {
        this.element = element;
        this.tangle = tangle;
        this.variable = variable;

        this.min = (options.min !== undefined) ? parseFloat(options.min) : 1;
        this.max = (options.max !== undefined) ? parseFloat(options.max) : 10;
        this.step = (options.step !== undefined) ? parseFloat(options.step) : 1;
        
        this.initializeHover();
        this.initializeHelp();
        this.initializeDrag();
    },


    // hover
    
    initializeHover: function () {
        this.isHovering = false;
        this.element.addEvent("mouseenter", (function () { this.isHovering = true;  this.updateRolloverEffects(); }).bind(this));
        this.element.addEvent("mouseleave", (function () { this.isHovering = false; this.updateRolloverEffects(); }).bind(this));
    },
    
    updateRolloverEffects: function () {
        this.updateStyle();
        this.updateCursor();
        this.updateHelp();
    },
    
    isActive: function () {
        return this.isDragging || (this.isHovering && !isAnyAdjustableNumberDragging);
    },

    updateStyle: function () {
        if (this.isDragging) { this.element.addClass("TKAdjustableNumberDown"); }
        else { this.element.removeClass("TKAdjustableNumberDown"); }
        
        if (!this.isDragging && this.isActive()) { this.element.addClass("TKAdjustableNumberHover"); }
        else { this.element.removeClass("TKAdjustableNumberHover"); }
    },

    updateCursor: function () {
        var body = document.getElement("body");
        if (this.isActive()) { body.addClass("TKCursorDragHorizontal"); }
        else { body.removeClass("TKCursorDragHorizontal"); }
    },


    // help

    initializeHelp: function () {
        this.helpElement = (new Element("div", { "class": "TKAdjustableNumberHelp" })).inject(this.element, "top");
        this.helpElement.setStyle("display", "none");
        this.helpElement.set("text", "drag");
    },
    
    updateHelp: function () {
        var size = this.element.getSize();
        var top = -size.y + 7;
        var left = Math.round(0.5 * (size.x - 20));
        var display = (this.isHovering && !isAnyAdjustableNumberDragging) ? "block" : "none";
        this.helpElement.setStyles({ left:left, top:top, display:display });
    },


    // drag
    
    initializeDrag: function () {
        this.isDragging = false;
        new BVTouchable(this.element, this);
    },
    
    touchDidGoDown: function (touches) {
        this.valueAtMouseDown = this.tangle.getValue(this.variable);
        this.isDragging = true;
        isAnyAdjustableNumberDragging = true;
        this.updateRolloverEffects();
        this.updateStyle();
    },
    
    touchDidMove: function (touches) {
        var value = this.valueAtMouseDown + touches.translation.x / 5 * this.step;
        value = ((value / this.step).round() * this.step).limit(this.min, this.max);
        this.tangle.setValue(this.variable, value);
        this.updateHelp();
    },
    
    touchDidGoUp: function (touches) {
        this.helpElement.setStyle("display", "none");
        this.isDragging = false;
        isAnyAdjustableNumberDragging = false;
        this.updateRolloverEffects();
        this.updateStyle();
    }
};




//----------------------------------------------------------
//
//  formats
//
//  Most of these are left over from older versions of Tangle,
//  before parameters and printf were available.  They should
//  be redesigned.
//

function formatValueWithPrecision (value,precision) {
    if (Math.abs(value) >= 100) { precision--; }
    if (Math.abs(value) >= 10) { precision--; }
    return "" + value.round(Math.max(precision,0));
}

Tangle.formats.p3 = function (value) {
    return formatValueWithPrecision(value,3);
};

Tangle.formats.neg_p3 = function (value) {
    return formatValueWithPrecision(-value,3);
};

Tangle.formats.p2 = function (value) {
    return formatValueWithPrecision(value,2);
};

Tangle.formats.e6 = function (value) {
    return "" + (value * 1e-6).round();
};

Tangle.formats.abs_e6 = function (value) {
    return "" + (Math.abs(value) * 1e-6).round();
};

Tangle.formats.freq = function (value) {
    if (value < 100) { return "" + value.round(1) + " Hz"; }
    if (value < 1000) { return "" + value.round(0) + " Hz"; }
    return "" + (value / 1000).round(2) + " KHz"; 
};

Tangle.formats.dollars = function (value) {
    return "$" + value.round(0);
};

Tangle.formats.free = function (value) {
    return value ? ("$" + value.round(0)) : "free";
};

Tangle.formats.percent = function (value) {
    return "" + (100 * value).round(0) + "%";
};


    
//----------------------------------------------------------

})();