

>
> ------------------------------
>
> Message: 4
> Date: Thu, 23 Jan 2014 11:07:05 +0100
> From: Celine Teplitsky <teplitsky@mnhn.fr>
> To: r-sig-mixed-models@r-project.org
> Subject: [R-sig-ME] distribution for ratios?
> Message-ID: <52E0E9C9.8060900@mnhn.fr>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Dear all,
>
> we are trying to run a meta-analysis on factors affecting heritability
> in MCMCglmm. As it is a ratio of 2 variances, the values are bounded
> between one and zero, but can not be interpreted as Success/NbTrials, so
> we can not use a binomial distribution.
>
> So the trouble we're having is knowing which distribution to use? Should
> we just use a Gaussian?

beta distribution?
See:

Bolker BM (2008) Ecological Models and Data in R. Princeton University 
Press: Woodstock, UK

Microsoft Word - ReferencesFinal.doc

Why is the ratio of two variances bounded at 1?

Alain Zuur
> Many thanks in advance for your help
>
> Best regards
>
> Celine
>


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