6.8.6.1.3. statsmodels.sandbox.stats.runs.median_test_ksample¶

statsmodels.sandbox.stats.runs.median_test_ksample(x, groups)[source]¶

chisquare test for equality of median/location

This tests whether all groups have the same fraction of observations above the median.

Parameters:

x : array_like

data values stacked for all groups

groups : array_like

group labels or indicator

Returns:

stat : float

test statistic

pvalue : float

pvalue from the chisquare distribution

others ????

currently some test output, table and expected