# Posts Tagged ‘ Negative binomial distribution ’

## Example 8.30: Compare Poisson and negative binomial count models

March 15, 2011
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How similar can a negative binomial distribution get to a Poisson distribution?When confronted with modeling count data, our first instinct is to use Poisson regression. But in practice, count data is often overdispersed. We can fit the overdispersio...

What is the probability you get the 4th cross before the 3rd head, flipping a coin?The mathematical formula for solving this exercise, which follows a negative binomial distribution, is:f(x)=P(X=x)=\begin{pmatrix} x+y-1\\ y-1 \end{pmatrix} \cdot p^x ...