7.2.3.3.7.6. statsmodels.genmod.families.family.Poisson.resid_dev¶

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

Poisson deviance residual

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
Returns:	resid_dev : array Deviance residuals as defined below

Notes

resid_dev = sign(endog-mu)*sqrt(2*endog*log(endog/mu)-2*(endog-mu))