statsmodels.genmod.families.family.Gamma.weights¶ Gamma.weights(mu)¶ Weights for IRLS steps Parameters:¶ mu : array_like¶The transformed mean response variable in the exponential family Returns:¶ w – The weights for the IRLS steps Return type:¶ ndarray Notes \[w = 1 / (g'(\mu)^2 * Var(\mu))\]