An unbiased estimator is efficient if its standard error is higher than that of other unbiased estimators of the estimated population parameter.

Question

Quizplus · Accepted Answer

Efficiency in estimation refers to the degree to which an estimator has a smaller variance than other unbiased estimators. Therefore, an efficient estimator will have a lower standard error than other unbiased estimators.

An Unbiased Estimator Is Efficient If Its Standard Error Is