想請(qǐng)問下我的工具變量2SLS的第一階段回歸出來的F值是10671.85,是不是太大了不太對(duì)啊,其他的結(jié)果都沒問題,就是F值很奇怪,謝謝大家。
F test of excluded instruments:
F( 1, 7170) = 10671.85
Prob > F = 0.0000
Sanderson-Windmeijer multivariate F test of excluded instruments:
F( 1, 7170) = 10671.85
Prob > F = 0.0000
Weak identification test (Cragg-Donald Wald F statistic): 1.4e+04
Stock-Yogo weak ID test critical values: 10% maximal IV size 16.38
15% maximal IV size 8.96
20% maximal IV size 6.66
25% maximal IV size 5.53
Source: Stock-Yogo (2005). Reproduced by permission.