[R] tukeyHSD

Cody Hamilton Cody_Hamilton at Edwards.com
Fri Jan 4 18:40:56 CET 2008


Tukey's HSD is only appropriate when you are interested in ALL pairwise comparisons between the means.
If there are specific contrasts that are of interest a priori, then other methods for controlling
the type I error over the family of contrasts are available (e.g. Bonferroni, Holm).

Regards,
   -Cody

Cody Hamilton
Edwards Lifesciences

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of hodgess
Sent: Thursday, January 03, 2008 8:18 AM
To: José Alberto Monteiro; r-help at stat.math.ethz.ch
Subject: Re: [R] tukeyHSD

Suppose you have an aov model x.aov
 Then you can use
 TukeyHSD(x.aov)

 to get all pairs.

 Hope this help!

 Sincerely,
 Erin

 -----Original Message-----
From: José Alberto Monteiro [mailto:goitaca at gmail.com]
Sent: Thursday, January 3, 2008 8:45:35 AM CST
To: r-help at stat.math.ethz.ch
Subject: [R] tukeyHSD

Does anybody know how to deffine in the test tukeyHSD the pairs of
comparison that you want to get? It is throw the lmat commnad, but I
don't know the correct usage...
Thanks a lot!
José
--
MSc José Alberto F. Monteiro
Botanisches Institut
Universität Basel

السلام عليكم
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