An unbiased estimator is a:
A) sample statistic used to approximate a population parameter
B) sample statistic,which has an expected value equal to the value of the population parameter
C) sample statistic whose value is usually less than the population parameter
D) standard error of the mean

Question

Quizplus · Accepted Answer

An unbiased estimator is a sample statistic that has an expected value equal to the value of the population parameter. In other words, if we repeatedly take samples from the population and calculate the sample statistic, the average of these sample statistics will be equal to the population parameter.

An Unbiased Estimator Is A