@cache_readonly
    def resid_pearson(self):
        val = self.model.endog - self.fittedvalues
        val = np.sqrt(self.family.variance(self.fittedvalues)) / val
        return val
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/genmod/generalized_estimating_equations.py/GEEResults.resid_pearson/swapped operands of `/`