why is the poisson chi square value overdispersed what does it means when the dispersion index is overdispersed chi square test dispersion overdispersed is a poisson fit data a good fit what does overdispersed mean in poisson fit data is the dispersion a parietal measure is poisson overdispersed how to check for dispersion in poisson why is the dispersed chi square test a good fit poisson overdispersed mean chi square if paris and chi square are the same why is poisson overdispersed what is poisson overdispersed chi square definition of overdispersed why is dispersion overdispersed with poisson is poisson good fit what does overdispersed mean? is poisson a good fit poisson data is overdispersed which chi square is based on overdispersed