I didn't do any research about this but I think it's the following:
If you run several t-tests to compare groups and then do a tukey-HSD you
won't get the same results either.
It's the same with the kruskal-wallis test. This happens because the
variance that is used for computing significant differ
Dear all,
I am using the Kruskal-Wallis test in R (kruskal.test()) to compare
non-normally distributed observations for 5 different groups. I now want to
perform multiple comparisons to identify the groups with significant
differences in the mean ranks. On searching the forum I found a number of
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