得出的检验结果如下
estat endog
Tests of endogeneity
H0: Variables are exogenous
Durbin (score) chi2(1) = 3.19446 (p = 0.0739)
Wu-Hausman F(1,253) = 3.11078 (p = 0.0790)
. estat firststage
First-stage regression summary statistics
Adjusted Partial
Variable R-sq. R-sq. R-sq. F(1,254) Prob > F
lnX2 0.7019 0.6925 0.0134 3.46161 0.0640
Minimum eigenvalue statistic = 3.46161
Critical Values # of endogenous regressors: 1
H0: Instruments are weak # of excluded instruments: 1
5% 10% 20% 30%
2SLS relative bias (not available)
10% 15% 20% 25%
2SLS size of nominal 5% Wald test 16.38 8.96 6.66 5.53
LIML size of nominal 5% Wald test 16.38 8.96 6.66 5.53


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