method
RegressionResults.
rsquared
R-squared of a model with an intercept. This is defined here as 1 - ssr/centered_tss if the constant is included in the model and 1 - ssr/uncentered_tss if the constant is omitted.
statsmodels.regression.linear_model.RegressionResults.resid_pearson
statsmodels.regression.linear_model.RegressionResults.rsquared_adj