RE: [R] how to estimate Type I, Type III SS

From: John Fox <jfox_at_mcmaster.ca>
Date: Wed 06 Apr 2005 - 23:08:37 EST


Dear Federico and Kum-Hoe,

The Anova function in the car package will compute "Type II" or "Type III" tests (with the former as the default); anova() computes "Type I" (sequential) tests. Be careful with the contrast coding for Type III tests.

Regards,
 John



John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox

> -----Original Message-----
> From: r-help-bounces@stat.math.ethz.ch
> [mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of
> Federico Calboli
> Sent: Wednesday, April 06, 2005 7:49 AM
> To: Kum-Hoe Hwang
> Cc: r-help
> Subject: Re: [R] how to estimate Type I, Type III SS
>
> On Wed, 2005-04-06 at 21:40 +0900, Kum-Hoe Hwang wrote:
> > Howdy, R gurus
> > I 'd like to know hwo to calculate or estimate SS of Type
> I and Type
> > III in ANOVA or other anaysis in R.
> > Thanks,
>
> If memory seves me well, try Anova in the car package
>
> F
> --
> Federico C. F. Calboli
> Department of Epidemiology and Public Health Imperial
> College, St Mary's Campus Norfolk Place, London W2 1PG
>
> Tel +44 (0)20 7594 1602 Fax (+44) 020 7594 3193
>
> f.calboli [.a.t] imperial.ac.uk
> f.calboli [.a.t] gmail.com
>
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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 Wed Apr 06 23:12:40 2005

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