The precision with which a sample average approximates a population average increases as
A) the standard deviation of the sample increases.
B) the standard deviation of the sample decreases.
C) the mean of the sample increases.
D) the mean of the sample decreases.

Question

Quizplus · Accepted Answer

The precision with which a sample average approximates a population average increases as the standard deviation of the sample decreases. This is because a smaller standard deviation means that the data points are closer to the mean, resulting in less variability and a more accurate representation of the population average.

The Precision with Which a Sample Average Approximates a Population