## mann-whitney u-test

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cgutierrez
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Joined: Sat Mar 18, 2006 7:57 pm

### mann-whitney u-test

for my paper, i need to use the mann-whitney test for N1=4 and N2=(anywhere between 150-175). However, the table in my textbook doesn't have those values.

where can i find an expanded table? link &/or copyright book info needed for reference list. thank u!

canalon
Inland Taipan
Posts: 3909
Joined: Thu Feb 03, 2005 2:46 pm
Google is your friend. It took me 20 seconds ( I type slowly) to find this:
http://eatworms.swmed.edu/~leon/stats/utest.html
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

sophia123
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Posts: 2
Joined: Wed Apr 12, 2006 7:16 pm

### Please help, critical values table for Mann Whitney U Test.

Hello,

I am trying to find critical values tables for Mann Whitney U test to see whether my results are significant. My n1 sample=20 and n2=21. All the tables I have found only seem to go up to 20. I have been told they do go up further but cannot seem to find the critical value tables anywhere.

I have looked on the website that is posted above but doesnt offer any help to me.

Thank you
Sophia

canalon
Inland Taipan
Posts: 3909
Joined: Thu Feb 03, 2005 2:46 pm
Ok your values are hard to find in a table. That is why I was suggesting to use a software that could calculate your values. On the linked site you already see how large the table is, so imagine for 175! Nevertheless they provide the code to do the calculation (If you know, not like me, how to compile and run it).

I remeber that the book "Biometry" had quite extensive table of critical value at the end, maybe you will find your answer in your library in this or any other biostatistics book.
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

Mukwhate
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Posts: 1
Joined: Wed Jan 10, 2007 3:05 pm

### thank you

Thank you for this website. it has really been of help

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