[R-sig-ME] zero-inflated-count-data?

C. AMAL D. GLELE altessedac2 at gmail.com
Sun Feb 25 22:45:40 CET 2018


Hi, Ben
Many thanks to you for your very helpful reply.
Best and regards,

2018-02-25 19:05 GMT+01:00 Ben Bolker <bbolker at gmail.com>:

> There is no set proportion.  (For example, a Poisson distribution with
> a mean of 0.01 is expected to be about 99% zeros, even without
> zero-inflation.) There's a little bit of (bare-bones) discussion of
> how to test for zero-inflation here:
> https://bbolker.github.io/mixedmodels-misc/glmmFAQ.html#zero-inflation
>
> On Sun, Feb 25, 2018 at 7:08 AM, C. AMAL D. GLELE <altessedac2 at gmail.com>
> wrote:
> > Hi, dear all.
> > From which proportion of zero a count should be considered as
> zero-inflated
> > (in order to use a zero-inflated model for it's modelling)?
> > In advance, thanks for your replies.
> > Best,
> >
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