Breusch–Godfrey test
Statistical hypothesis test for the presence of serial correlation / From Wikipedia, the free encyclopedia
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In statistics, the Breusch–Godfrey test is used to assess the validity of some of the modelling assumptions inherent in applying regression-like models to observed data series.[1][2] In particular, it tests for the presence of serial correlation that has not been included in a proposed model structure and which, if present, would mean that incorrect conclusions would be drawn from other tests or that sub-optimal estimates of model parameters would be obtained.
The regression models to which the test can be applied include cases where lagged values of the dependent variables are used as independent variables in the model's representation for later observations. This type of structure is common in econometric models.
The test is named after Trevor S. Breusch and Leslie G. Godfrey.