def fit(self, X, y=None):
        self._fit_transform(X)
        return self
Cochran's Q test for identical binomial proportions.
dataset/ETHPy150Open scikit-learn/scikit-learn/sklearn/manifold/isomap.py/Isomap.fit--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/stats/contingency_tables.py/cochrans_q