mannWhitneyUTest

Syntax

mannWhitneyUTest(X, Y, [correct=true])

Arguments

X is a numeric vector.

Y is a numeric vector.

correct is a Boolean value indicating whether to consider continuity correction when calculating the p-value. The default value is true.

Details

Perform the Mann-Whitney U test on X and Y. It returns a dictionary object with the following keys:

• stat: A table containing p-values under three different alternative hypotheses

• correct: Whether to consider continuity correction when calculating p-value

• method: The string ”Mann-Whitney U test”

• U: U statistic

Examples

$ mannWhitneyUTest(5 1 4 3 5, 2 4 7 -1 0 4);

stat->

alternativeHypothesis                 pValue
------------------------------------- --------
true location shift is not equal to 0 0.518023
true location shift is less than 0    0.259011
true location shift is greater than 0 0.797036

correct->true
method->Mann-Whitney U test
U->11