问题如下图:
请问答案解释最后半句话是什么意思?
NO.PZ2020010801000033问题如下Whis the strongest justification for using OLS to estimate mol parameters?When the errors are iinormally stribute then the OLS estimator of the regression parameters (α\alphanβ\betaβ, but not s2s^2s2) is MVUE (Minimum VarianUnbiaseEstimator), anso there is not a better estimator available.老师,在讲义里,没有提到OLS的前提是e独立同分步,且e服从正态分布呀,独立能理解但为什么要求e是同分步,且e服从正态分步呢?
老师你好,BLUE和题中的MVUE有什么区别?