finger · 2021年03月15日
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NO.PZ201512020300000306
问题如下：
6. Is Chang’s Statement 2 correct?
选项：
A. Yes.
B. No, because the model’s coefficient estimates will be unbiased.
C. No, because the model’s coefficient estimates will be consistent.
解释：
A is correct.
Chang is correct because a correlated omitted variable will result in biased and inconsistent parameter estimates and inconsistent standard errors.
一致性为什么会BiasNO.PZ201512020300000306 为什么这里parameter estimates 是 inconsistent. 样本容量没变，难道不是不影响consistency吗
NO.PZ201512020300000306 老师 这个知识点在哪
No, because the mol’s coefficient estimates will unbiase No, because the mol’s coefficient estimates will consistent. A is correct. Chang is correbecause a correlateomittevariable will result in biaseaninconsistent parameter estimates aninconsistent stanrerrors. 为什么？遗漏的变量和在mol内的变量相关被删除了还会bias？还有什么强弱相关性？完全不知道是哪里的知识点
No, because the mol’s coefficient estimates will unbiase No, because the mol’s coefficient estimates will consistent. A is correct. Chang is correbecause a correlateomittevariable will result in biaseaninconsistent parameter estimates aninconsistent stanrerrors. 这个题不是说遗漏变量吧？不是说省略的变量与现存其他变量是correlate吗？那不是应该省略，怎么会带来一系列问题呢？
