Contingency table functions (scipy.stats.contingency)

Functions for creating and analyzing contingency tables.

chi2_contingency(observed[, correction, lambda_])	Chi-square test of independence of variables in a contingency table.
relative_risk(exposed_cases, exposed_total, ...)	Compute the relative risk (also known as the risk ratio).
crosstab(*args[, levels, sparse])	Return table of counts for each possible unique combination in *args.
association(observed[, method, correction, ...])	Calculates degree of association between two nominal variables.
expected_freq(observed)	Compute the expected frequencies from a contingency table.
margins(a)	Return a list of the marginal sums of the array a.

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