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statsmodels.genmod.families.family.Gamma.resid_dev

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

Gamma deviance residuals

Parameters :

Y : 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(Y - mu) * sqrt(-2*(-(Y-mu)/mu + log(Y/mu)))

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