在处理robust test from different estimators时,
我的经验得出,
OLS 会得到偏高的结果
FE or RE 会得到偏低的结果
GMM or system-GMM 会得到缓和的结果
如果有错,请大家指出.
楼主: smilewj
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5172
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OLS, FE, RE, GMM |
高中生 75%
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回帖推荐我认为是这个原因:
1. When conducting OLS or GLS, The coefficient value or significant level may be serious upward biased due to failures of some assumptions , like collinearity, E(U)`=0, autocorrelation striction, or even efficient issues
2. FE or RE may have downward result: FE lose too many degree of freedom, RE will be downward biased if E=0.
3. GMM is a good estimator to deal with autocorre ...
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