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st: mann-whitney test

Subject   st: mann-whitney test
Date   Thu, 4 May 2006 10:44:52 +0200 (CEST)

Dear all,
I have to run the mann-whitney test to check the difference in the trend
between two treatments in a public good game experiment.
This test has to be run on average contributions of groups. Does it mean
that I should have in my dataset a single observation for each group that
represents the average contribution of the group over all the periods?
Thank you.

stefania Ottone

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