运用xtcsd 检验时出错!
xtcsd,pesaran
Error: The panel is highly unbalanced.
Not enough common observations across panel to perform Pesaran's test.
insufficient observations
xtcsd , friedman
There are not enough common observations to perform Frees or Friedmand tests
xtcsd , frees 出现同样的错误!
求解?
非平衡面版数据中,怎么检测截面相关呢??


雷达卡






准备不考虑截面相关这个问题了……只处理数据的组间异方差和组内自相关吧,这样用全面FGLS就可以做了……
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