Stock-Yogo weak ID F test critical values for single endogenous regressor总是过不了怎么办?
比如这样:
Summary results for first-stage regressions
-------------------------------------------
(Underid) (Weak id)
Variable | F( 3, 283) P-val | SW Chi-sq( 2) P-val | SW F( 2, 283)
REP | 9.56 0.0000 | 44.13 0.0000 | 20.95
NIM | 4.52 0.0041 | 16.00 0.0003 | 7.60
NB: first-stage test statistics heteroskedasticity-robust
Stock-Yogo weak ID F test critical values for single endogenous regressor:
5% maximal IV relative bias 13.91
10% maximal IV relative bias 9.08
20% maximal IV relative bias 6.46
30% maximal IV relative bias 5.39
10% maximal IV size 22.30
15% maximal IV size 12.83
20% maximal IV size 9.54
25% maximal IV size 7.80
Source: Stock-Yogo (2005). Reproduced by permission.
NB: Critical values are for i.i.d. errors only.
我做出来的所有在10%relative bias的回归值在大于10的时候就可以通过,
但是我做出来都是9.08。。

调整了好多次都是9.08.。。
请问这是可能是什么原因造成的?应该怎么解决?
拜谢~!


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