Among all unbiased estimators that are weighted averages of $Y _ { 1 } , \ldots , Y _ { n } , \bar { Y }$
is
A) the only consistent estimator of $\mu _ { Y }$
B) the most efficient estimator of $\mu _ { Y }$
C) a number which, by definition, cannot have a variance.
D) the most unbiased estimator of $\mu _ { Y }$

Question

Quizplus · Accepted Answer

The Answer of Among all unbiased estimators that are weighted averages of $Y _ { 1 } , \ldots , Y _ { n } , \bar { Y }$
is
A) the only consistent estimator of $\mu _ { Y }$
B) the most efficient estimator of $\mu _ { Y }$
C) a number which, by definition, cannot have a variance.
D) the most unbiased estimator of $\mu _ { Y }$

Among All Unbiased Estimators That Are Weighted Averages Of Y1,…,Yn,YˉY _ { 1 } , \ldots , Y _ { n } , \bar { Y }Y1​,…,Yn​,Yˉ

Among All Unbiased Estimators That Are Weighted Averages Of $Y _ { 1 } , \ldots , Y _ { n } , \bar { Y }$