statsmodels.sandbox.regression.gmm.IVRegressionResults.HC1_se¶

IVRegressionResults.HC1_se¶

MacKinnon and White’s (1985) heteroskedasticity robust standard errors.

Notes

Defined as sqrt(diag(n/(n-p)*HC_0).

When HC1_se or cov_HC1 is called the RegressionResults instance will then have another attribute het_scale, which is in this case is n/(n-p)*resid**2.