statsmodels.genmod.generalized_estimating_equations.GEE.mean_deriv¶
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GEE.mean_deriv(exog, lin_pred)[source]¶ Derivative of the expected endog with respect to the parameters.
Parameters: - exog (array-like) – The exogeneous data at which the derivative is computed.
 - lin_pred (array-like) – The values of the linear predictor.
 
Returns: - The value of the derivative of the expected endog with respect
 - to the parameter vector.
 
Notes
If there is an offset or exposure, it should be added to lin_pred prior to calling this function.
