黃河泉 发表于 2021-4-21 10:53 
我去问了,请看看 Jeff Wooldridge 之回答,https://www.statalist.org/forums ... ue-of-ar-1-test-0-1。
黄老师,我有点没看懂这个回答 是说要观察估计值大小与-0.5的差距么? 我的数据是个N为31 T为10的短面板,通过加入解释变量的滞后期作为工具变量,AR2和Hansen检验能通过原假设,就是那个AR1的P值已经不能拒绝原假设了 老师能不能解释的简单点呢?
Arellano-Bond test for AR(1) in first differences: z = -1.54 Pr > z = 0.124
Arellano-Bond test for AR(2) in first differences: z = -0.71 Pr > z = 0.475
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Sargan test of overid. restrictions: chi2(18) = 23.34 Prob > chi2 = 0.178
(Not robust, but not weakened by many instruments.)
Hansen test of overid. restrictions: chi2(18) = 21.27 Prob > chi2 = 0.266
(Robust, but weakened by many instruments.)