Message-ID: <1355562265.98251.YahooMailNeo@web124904.mail.ne1.yahoo.com>
Date: 2012-12-15T09:04:25Z
From: Omphalodes Verna
Subject: kruskalmc, significant differences while median values are the same
Dear list!
I work with multiple Kruskal-Wallis test (kruskalmc, package pgirmess), which evaluates differences in medians among groups (5 groups). A result of a test is significant differences among some groups, while median values are the same for 4 groups (using tapply). Why?
p.s.: number of samples in groups vary from 50 to 4900.
Thanks to all, OV
.