stac.nonparametric_tests.friedman_aligned_ranks_test

stac.nonparametric_tests.friedman_aligned_ranks_test(*args)

Performs a Friedman aligned ranks ranking test. Tests the hypothesis that in a set of k dependent samples groups (where k >= 2) at least two of the groups represent populations with different median values. The difference with a friedman test is that it uses the median of each group to construct the ranking, which is useful when the number of samples is low.

Parameters:

sample1, sample2, ... : array_like

The sample measurements for each group.

Returns:

Chi2-value : float

The computed Chi2-value of the test.

p-value : float

The associated p-value from the Chi2-distribution.

rankings : array_like

The ranking for each group.

pivots : array_like

The pivotal quantities for each group.