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An estimator is_________ if the variance of the estimator is the smallest among all unbiased estimators of the parameter that it's estimating.
A. Efficient
B. Normally Distributed
C. Unbiased
D. Consistent

Respuesta :

oyejam

Answer:

Correct answer is (A). Efficient

Step-by-step explanation:

The lower the variance of an estimator, the higher its accuracy and efficiency because variance measure how far a set of data spread out. So the quality of an estimator among unbiased estimator depends on the one with smallest variance.

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