linearmodels.asset_pricing.results.LinearFactorModelResults.j_statistic¶

property LinearFactorModelResults.j_statistic : WaldTestStatistic¶

Model J statistic

Returns:¶

Test statistic for null that model prices test portfolios

Return type:¶

linearmodels.shared.hypotheses.WaldTestStatistic

Notes

Joint test that all estimated \(\hat{\alpha}_i\) are zero. Implemented using a Wald test using the estimated parameter covariance.