Ricardo Arias Brito wrote: > > Dear All, > > Is posible calculate Std. Error for glm as lm, using > cov(hat beta) = phi * solve(t(X) %*% hat W %*% X)^-1 > on R? Who is hat W and phi output glm? > > y=rpois(20,4) > fit.glm <- glm(y ~ x, family=poisson > summary(fit.glm) > > Fitted to a model glm using constrast contr.sum and need compute > the error standard for last level of the factor. > > best wishes for all, > > Ricardo. >
Does sqrt(diag(vcov(fit.glm))) not give you what you need? Ian -- View this message in context: http://www.nabble.com/standard-error-beta-glm-tp23987737p24008764.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
