A researcher takes a sample from a population and computes a statistic for the sample.Which of the following statements is correct?
A)If the sample statistic overestimates the corresponding population parameter, then the statistic is biased.
B)If the sample statistic underestimates the corresponding population parameter, then the statistic is biased.
C)If the sample statistic is equal to the corresponding population parameter, then the statistic is unbiased.
D)None of the other statements is correct.

Question

Quizplus · Accepted Answer

A statistic is considered unbiased if, on average, it equals the population parameter across many samples, not just in one instance.

A Researcher Takes a Sample from a Population and Computes