Message-ID: <loom.20110131T174012-811@post.gmane.org>
Date: 2011-01-31T16:40:52Z
From: Ben Bolker
Subject: test statistic in anova.glm when quasi family is used
Eiiti Kasuya <ekasuscb <at> kyushu-u.org> writes:
>
> When quasi family (not quasipoisson or quasibinomial) is used in glm,
> what is the appropriate test statistic in anova.glm?
> Help of anova.glm tells ?For models with known dispersion (e.g.,
> binomial and Poisson fits) the chi-squared test is most appropriate, and
> for those with dispersion estimated by moments (e.g., gaussian,
> quasibinomial and quasipoisson fits) the F test is most appropriate?. I
> assume that F is appropriate in the case of quasi (not quasipoisson or
> quasibinomial). Is this correct?
>
> Ei Kasuya
>
Yes.
References are Venables and Ripley (i.e. MASS) and Crawley's
Statistical Data Analysis book.
Ben Bolker