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Estimate parameters of a negative binomial distribution using method of moments
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| > counts <- rnbinom(1000, size = 10, p = 0.1) | |
| > mu <- mean(counts) | |
| > p <- mu/var(counts) | |
| > r <- mu ^ 2/(var(counts) - mu) | |
| > hist(counts, freq = F) | |
| > curve(dnbinom(x, size = r, prob = p), from = 0, to = max(counts), n = max(counts) + 1) |
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