We can most accurately estimate the mean of a population if a sample is
A) large in size and low in variability.
B) small in size and high in variability.
C) large in size and high in variability.
D) small in size and low in variability.

Question

Quizplus · Accepted Answer

A larger sample size decreases the standard error and increases the accuracy of the estimate. A lower variability also reduces the standard error and increases the accuracy of the estimate. Therefore, a sample that is both large in size and low in variability is the best choice for accurately estimating the population mean.

We Can Most Accurately Estimate the Mean of a Population