下面是我的结果:
Correlated Random Effects - Hausman Test
Pool: Untitled
Test cross-section random effects
Test Summary Chi-Sq. Statistic Chi-Sq. d.f. Prob.
Cross-section random 0.000000 2 1.0000
* Cross-section test variance is invalid. Hausman statistic set to zero.
问题出在什么地方呢?