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Old 12-10-2019, 10:11 PM
Relmiw Relmiw is offline
Join Date: Apr 2013
Posts: 201

Originally Posted by actuary121110 View Post
If mean approximately equals to variance, use Poisson.
If mean is less than variance (overdispersion), use quasi-poisson or negative binomial.
How much less than variance? What if the mean is 1000 and the variance is 300? 900? 990? Are you looking at a sample mean confidence interval?
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