pairwise comparisons among treatments

help.search('pairwise comparison')

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
 
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch 
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of kevin Lin
Sent: Monday, September 19, 2005 2:33 PM
To: r-help at stat.math.ethz.ch
Subject: [R] pairwise comparisons among treatments

Hello R listing,

I did two-way anova on lm. Further question the investigator 
interested in is what two treatments are different?

I am looking for a command which could do pairwise comparison for 
every treatment.

Could anyone help me out?

Thanks a bunch

Kevin

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Hello Bert,

Thanks for your response. I don't know why I am getting following 
error messages. I use version of "R version 2.1.1, 2005-06-20, 
powerpc-apple-darwin7.9.0 " in Mac OS X version 10.3.8.
I did try to load following packages before, but it failed.

help.search("pairwise comparison")
Error in help.search("pairwise comparison") :
	could not find package 'arrayQuality.1'
In addition: Warning messages:
1: no Rd contents for package 'R2HTML' in 
'/Library/Frameworks/R.framework/Resources/library' in: 
help.search("pairwise comparison")
2: no Rd contents for package 'affylmGUI' in 
'/Library/Frameworks/R.framework/Resources/library' in: 
help.search("pairwise comparison")

Thanks.

Kevin

help.search('pairwise comparison')

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA

"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box