# statsmodels.stats.diagnostic.acorr_breusch_godfrey¶

statsmodels.stats.diagnostic.acorr_breusch_godfrey(results, nlags=None, store=False)[source]

Breusch Godfrey Lagrange Multiplier tests for residual autocorrelation

Parameters
• results (Result instance) – Estimation results for which the residuals are tested for serial correlation

• nlags (int) – Number of lags to include in the auxiliary regression. (nlags is highest lag)

• store (bool) – If store is true, then an additional class instance that contains intermediate results is returned.

Returns

• lm (float) – Lagrange multiplier test statistic

• lmpval (float) – p-value for Lagrange multiplier test

• fval (float) – fstatistic for F test, alternative version of the same test based on F test for the parameter restriction

• fpval (float) – pvalue for F test

• resstore (instance (optional)) – a class instance that holds intermediate results. Only returned if store=True

Notes

BG adds lags of residual to exog in the design matrix for the auxiliary regression with residuals as endog, see Greene 12.7.1.

References

Greene Econometrics, 5th edition