汪同学2021-07-11 20:42:16
最后一道题,遗漏了一个变量如果做最小二乘应该还是最优无偏估计啊,怎么会有偏呢
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Kevin2021-07-12 09:17:02
同学你好!
这是原版书320页的原话:If the omitted variable (X2) is correlated with the remaining variable (X1), then the error term in the model will be correlated with (X1), and the estimated values of the regression coefficients a0 and a1 would be biased and inconsistent.
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