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Re: Error in computation of Mann-Whitney-U Test


From: Dr. Walter Statistics
Subject: Re: Error in computation of Mann-Whitney-U Test
Date: Sat, 4 Mar 2017 20:38:45 +0100
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1

I checked it by using a published data set and three different statistical programs including PSPP. I could not find any significant differences between the results. PSPP's Mann Whitney U test procedure seems to be working properly.

Kind regards,

Oliver Walter

Am 04.03.2017 um 19:51 schrieb Dr. Walter Statistics:

Dear Prof. Nuszbaum,

your question would be easier to answer if you described it in more detail, e.g. by posting your outputs and / or your data sets (if the sample sizes are small, we could compare the results).

Kind regards

Oliver Walter

---
Dr. Walter Statistics
Gabelsberger Straße 27
24148 Kiel

Am 04.03.2017 um 19:20 schrieb Mandy Nuszbaum:

Dear all,

 

I computed Mann-Whitney-U using PSPP and SPSS and compared the results using different data sets. Results are completely different and led to wrong conclusions.

 

Can anyone fix the problem?

 

Kind regards,

mn



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