Message-ID: <1321356801863-4042627.post@n4.nabble.com>
Date: 2011-11-15T11:33:21Z
From: syrvn
Subject: Question regarding Kruskal-Wallis test
Hello,
I need to analyse an experiment with 3 groups:
Control group
Treated group 1 (drug 1)
Treated group 2 (drug 2)
If I use a Kruskal-Wallis test do analyse the data and if I define the
control group as the reference group does the test do then the following
comparisons?
Control group vs. Treated group 1
Control group vs. Treated group 2
Treated group 1 vs. Treated group 2
I am not sure about whether the last comparison is made by the test or not?
What happens if I have 4 different groups? Are there then all possible
combinations compared?
Cheers,
Syrvn
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