Re: [R] testing factor effects in glm

From: John Fox <jfox_at_mcmaster.ca>
Date: Thu 23 Feb 2006 - 05:29:12 EST


Dear Istvan,

You might want to take a look at the Anova() and linear.hypothesis() functions in the car package.

Regards,
 John  

 On Wed, 22 Feb 2006, I.Szentirmai wrote:  

> Dear All,
>
> I'm using a glm to analyse the effect of year on a
> variable with poisson distribution. Using the summary() I
> can test whether years are different from each other, but
> how can I test whether year has an overall effect on my
> respons variable? My guess is that by a Wald-test, but I
> don't know how exactly.



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