InverseGaussian.deviance()

statsmodels.genmod.families.family.InverseGaussian.deviance

InverseGaussian.deviance(endog, mu, scale=1.0) [source]

Inverse Gaussian deviance function

Parameters:	endog : array-like Endogenous response variable mu : array-like Fitted mean response variable scale : float, optional An optional scale argument
Returns:	deviance : float Deviance function as defined below

Notes

deviance = sum((endog=mu)**2/(endog*mu**2))