[R-sig-ME] glmms:Checking out over_under_dispersion

[Ben Bolker]

The standard advice is to compare either the residual deviance or the
sum of squares of the Pearson residuals to the residual degrees of
freedom (i.e. (number of observations) - (number of parameters)). This
is essentially taking the advice for GLMs (see e.g. McCullagh and
Nelder, or probably any textbook on GLMs) and applying it to GLMMs.
On Thu, Aug 9, 2018 at 9:24 PM C. AMAL D. GLELE <altessedac2 using gmail.com> wrote:
>
> If, for a given built glmm "mod", I don't want to use an available tool to
> check out (over or under) dispersion, with which variance should I compare
> the total variance explained by mod?
> In advance, thanks for your replies.
> Kind regards,
>
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