Rank sum test
From Encyclopedia of Mathematics
A test of the homogeneity of two samples 
and 
based on the rank statistic 
— the sum of the ranks 
of the random variables 
in the joint series of order statistics (cf. Order statistic) of 
and 
(the elements of the two samples are mutually independent and come from continuous distributions). It is a variant of the Wilcoxon test.
How to Cite This Entry:
Rank sum test. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Rank_sum_test&oldid=12062
Rank sum test. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Rank_sum_test&oldid=12062
This article was adapted from an original article by A.V. Prokhorov (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article