[R] testing factor effects in glm

I.Szentirmai I.Szentirmai at rug.nl
Wed Feb 22 14:32:48 CET 2006


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.

Could someone give me advice?

Many thanks,
Istvan




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