A(n)________ is a sample statistic that equals a population parameter on average.
A) biased estimator
B) degrees of freedom
C) unbiased estimator
D) sum of squares

Question

Quizplus · Accepted Answer

An unbiased estimator is a sample statistic that, if repeatedly calculated from multiple samples, would equal the population parameter on average. In other words, it has no systematic tendency to over- or underestimate the parameter. Biased estimators, on the other hand, consistently over- or underestimate the parameter. Options A, B, and D are not correct because they refer to other concepts within statistics.

A(n)________ Is a Sample Statistic That Equals a Population Parameter