You can choose between the Poisson and the Negative Binomial models by performing a
A)test of over-dispersion.
B)Poisson choice test.
C)Negative Binomial test.
D)test of overall significance of the Poisson model.

Question

Quizplus · Accepted Answer

Testing for over-dispersion is the best way to determine whether the data are better described by a Poisson or a Negative Binomial model. The Poisson model assumes that the mean and variance of the data are equal, which may not always be the case. The negative binomial model allows for over-dispersion and is often a better choice when the variance of the data is larger than the mean.

You Can Choose Between the Poisson and the Negative Binomial