Hausman检验 OLS要放在IV后面!The order of computing the two estimators may be reversed. You have to be careful,
though, to specify to hausman the models in the order "always consistent" first and
"efficient under H0" second. It is possible to skip storing the second model and refer
to the last estimation results by a period (.).
"chi2<0 ==> model fitted on these
data fails to meet the asymptotic
assumptions of the Hausman test;
see suest for a generalized test"
hausman 检验后,出现这个结果吧?
Test: Ho: difference in coefficients not systematic
chi2(6) = (b-B)'[(V_b-V_B)^(-1)](b-B)
= -86.00 chi2<0 ==> model fitted on these
data fails to meet the asymptotic
assumptions of the Hausman test;
see suest for a generalized test
请问,豪斯曼检验之后出现这样的结果是什么意思呀?不是很明白呢