问题:Can ordinary least squares be used to estimate the two regressions? If not, why not?
(最小二乘法能用来预测这两个回归吗?如果不能为什么?
答案:There are endogenous variables in each regression which violate the assumption of E(Xu)=0
The implications are:
The estimate of OLS are biased and inconsistent
(每个回归里有内生变量(Y1 Y2),这违反了E(Xu)=0的假设
这意味
最小二乘法的估计是有偏差和不一致的
有人能详细解释一下答案的意思吗?