test_dc_stat_think.py 文件源码

def test_studentized_diff_of_means(data_1, data_2):
    if np.var(data_1) == np.var(data_2) == 0:
        assert np.isnan(dcst.studentized_diff_of_means(data_1, data_2))
    else:
        t, _ = st.ttest_ind(data_1, data_2, equal_var=False)
        assert np.isclose(dcst.studentized_diff_of_means(data_1, data_2), t)