Re: [R] lm type of sums of squares

From: John Fox <jfox_at_mcmaster.ca>
Date: Sat 29 Oct 2005 - 03:25:38 EST


Dear Jarrett,

anova() gives sequential sums of squares (as ?anova.lm says). See Anova() in the car package for something similar to Type II and III sums of squares.

I hope this helps,
 John

On Fri, 28 Oct 2005 10:05:39 -0700
 Jarrett Byrnes <redbeard@arrr.net> wrote:
> I'm curious, I realize there are methods for Type II and III sums of
> squares, and yet, when I've been constructing models with lm, I've
> noticed that position of the term of the model has not mattered in
> terms of its p-value. Does lm use sequential Type I sums of squares,
>
> or something else?
>
> Thanks!
>
> -Jarrett
>
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John Fox
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
http://socserv.mcmaster.ca/jfox/

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Oct 29 03:29:55 2005

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