An unbiased estimator is a sample statistic
A)used to approximate a population parameter.
B)which has an expected value equal to the value of the population parameter.
C)whose value is usually less than the population parameter.
D)that arises from samples that are of size 30 or fewer.

Question

Quizplus · Accepted Answer

An unbiased estimator is defined as a statistic whose expected value is equal to the true value of the population parameter it estimates.

An Unbiased Estimator Is a Sample Statistic