An estimator is said to be unbiased if ________.
A)its expected value equals the population parameter
B)it is greater than one
C)it is estimated from a relatively small sample
D)it is equal to or lesser than zero

Question

Quizplus · Accepted Answer

An estimator is said to be unbiased if its expected value (i.e. the average value of its estimates over many samples) is equal to the population parameter it is estimating. A biased estimator, on the other hand, will systematically overestimate or underestimate the population parameter. Choices B, C, and D do not accurately define what it means for an estimator to be unbiased.

An Estimator Is Said to Be Unbiased If ________