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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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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