statespace
VARMAXResults.
cov_params_robust_oim
(array) The QMLE variance / covariance matrix. Computed using the method from Harvey (1989) as the evaluated hessian.
statsmodels.tsa.statespace.varmax.VARMAXResults.cov_params_robust_approx
statsmodels.tsa.statespace.varmax.VARMAXResults.f_test