[R] about overdispersed poisson model

ronggui ronggui.huang at gmail.com
Mon Jul 10 06:42:26 CEST 2006

You can use glm to analysis this data ,with family=quasipoisson.
see ?glm and ?family

2006/7/10, g0354502 <g0354502 at nccu.edu.tw>:
> Dear R users
>   I have been looking for functions that can deal with overdispersed poisson
> models. According to actuarial literature (England & Verall, Stochastic Claims
> Reserving in General Insurance , Institute of Actiuaries 2002) this can be handled through the
> use of quasi likelihoods instead of normal likelihoods. However, we see them frequently
> in this type of data, and we would like to be able to fit the model anyway.
> If it is possible, would you please show me how to find the corresponding package and utilize them?
> Best Regards,
>             Chi Kai
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Department of Sociology
Fudan University

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