Thanks Ben! This wiki has a lot of information I do need to know!! Really
grateful!

Merry Xmas to everybody!

On 24 December 2011 12:39, Ben Bolker <bbolker@gmail.com> wrote:

> Ricardo Solar <rrsolar@...> writes:
>
> >
> > Guys;
> >
> > Really thanks for your help!!! Always with lots of solutions!
> >
> > Thanks
> >
> > On 20 December 2011 15:59, mikhail matz <matz@...> wrote:
> >
> > > Hey Ricardo -
> > >
> > > I faced this problem myself very recently, and there is a recent
> exchange
> > > on the subject which seems to be an easy solution. Look up
> > > R-sig-mixed-models Digest, Vol 47, Issue 53; thread by David
> Stainbrook.
> > > Briefly, you can effect modeling with negative binomial distribution
> (which
> > > takes care of the overdispersion) on counts data by using lognormal
> poisson
> > > distribution.
>
>  [snip]
>
> >  There is even a reference to a paper laying
> > > down the theory: Elston et al, Parasitology (2001), 122, 563-569.
>
>
>   See also http://glmm.wikidot.com/faq , the section on overdispersion
> (I tried to include a few more references there).
>  Note that the lognormal-Poisson is *not* the same as the negative
> binomial distribution, although it does have the same mean-variance
> relation ...
>
>  Ben Bolker
>
> _______________________________________________
> R-sig-mixed-models@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-sig-mixed-models
>



-- 
==========================================
Ricardo Ribeiro de Castro Solar (Curriculo
Lattes<http://lattes.cnpq.br/9924177207371692>
)
MSc. em Entomologia - Doutorando - PPG Entomologia
Laboratório de Ecologia de Comunidades/Formigas <http://www.labecol.ufv.br>
(31) 3899-4018 - Contato Skype: rrsolar
Universidade Federal de Viçosa - MG
==========================================

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