statsmodels.genmod.families.family.Gamma.resid_dev

Gamma.resid_dev(endog, mu, scale=1.0)[source]

Gamma deviance residuals

Parameters:

endog : array-like

Endogenous response variable

mu : array-like

Fitted mean response variable

scale : float, optional

An optional argument to divide the residuals by scale. The default is 1.
Returns:

resid_dev : array

Deviance residuals as defined below

Notes

resid\_dev_i = sign(Y_i - \mu_i) \sqrt{-2 * (-(Y_i - \mu_i) / \mu_i + \log(Y_i / \mu_i))}