causal_networkx.ci.FisherZCITest# class causal_networkx.ci.FisherZCITest(correlation_matrix=None)[source]# Methods test(df, x_var, y_var[, z_covariates]) Run conditional independence test. test(df, x_var, y_var, z_covariates=None)[source]# Run conditional independence test. Parameters: df : pd.DataFrame _description_ x : Any _description_ y : Any _description_ z : Any, optional _description_, by default None Returns: stat : float The test statistic. pvalue : float The p-value of the test. :rtype:py:data:Tuple[float, float]