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st: mann-whitney test
Sorry, but I'm confused! I ran two treatments and 32 subjects (organised
in group of 4) participated to each treatment (10 periods). This means
that I have only 8 independent observations in each period for each
treatment. How should be my dataset to run the mann-whitney test? If I
consider 320 observations in each treatment, I cannot say that they are
independent. How should I perform the test in this case?
> There is some misunderstanding here, I guess.
> Mann-Whitney requires at a minimum all
> the individual ranks. It can't work on just
> input of averages, or even medians.
>> 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?
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