Re: [R] p values when using rlm

From: Marc Schwartz <>
Date: Sun 27 Mar 2005 - 13:15:19 EST

On Sat, 2005-03-26 at 20:36 -0500, John Sorkin wrote:
> R 2.0.1
> Linux
> I am using rlm() to fit a model, e.g. fit1<-rlm(y~x). My model is more
> complex than the one shown.
> When I enter summary(fit1)
> I get estimates for the model's coefficients along with their SEs, and
> t values, but no p values. The p value column is blank.
> Similarly, when I enter anova(fit1) I get DF, Sum Sq, Mean Sq, but the
> column for F value and Pr(>F) are blank.
> Any suggestions that will allow me to get the p values for summary, the
> F and p values for anova?
> Thanks,
> John


Perhaps these two posts may be of help to you:

I also located via a Google search the f.robftest() function in the 'sfsmisc' package on CRAN:

but I would have to defer to the respective authors as to the pros and cons of any of these approaches.

HTH, Marc Schwartz mailing list PLEASE do read the posting guide! Received on Sun Mar 27 13:18:40 2005

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