search for: negativebinomialdistribut

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2006 Jun 05
1
negative binomial: expected number of events?
Hi I'm fitting poisson and negative binomial distributions to event data. I'm interested in the expected number of events occuring in a time period. For the poisson this is determined by the parameter lambda only. For the neg. binomial, is the expected number of events determined by the parameter "mu" only or does parameter "size" influence the first moment as