def resid_anscombe(self, endog, mu):
        r"""
        The Anscombe residuals for the Gaussian exponential family distribution

        Parameters
        ----------
        endog : array
            Endogenous response variable
        mu : array
            Fitted mean response variable

        Returns
        -------
        resid_anscombe : array
            The Anscombe residuals for the Gaussian family defined below

        Notes
        --------
        .. math::

           resid\_anscombe_i = Y_i - \mu_i
        """
        return mu - endog
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/genmod/families/family.py/Gaussian.resid_anscombe/swapped operands of `-`