Eviews中出现这种结果,怎么解读呢?
Test Summary Chi-Sq. Statistic Chi-Sq. d.f. Prob.
Cross-section random 0.000000 2 1.0000
Period random 0.000000 2 1.0000
Cross-section and period random 0.000000 2 1.0000
* Cross-section test variance is invalid. Hausman statistic set to zero.
* Period test variance is invalid. Hausman statistic set to zero.
Cross-section random effects test comparisons:
Variable Fixed Random Var(Diff.) Prob.
RY? 0.269170 0.277923 -0.000477 NA
GZ? 0.444028 0.450754 -0.000297 NA