statsmodels.genmod.families.family.Binomial.initialize¶ Binomial.initialize(endog, freq_weights)[source]¶ Initialize the response variable. Parameters endogndarrayEndogenous response variable freq_weightsndarray1d array of frequency weights Returns If endog is binary, returns endog If endog is a 2d array, then the input is assumed to be in the format (successes, failures) and successes/(success + failures) is returned. And n is set to successes + failures.