The sample mean
A)is always equal to the population mean.
B)is always smaller than the population mean.
C)is found by adding the data values and dividing them by (n − 1).
D)is found by adding all data values and dividing them by n.

Question

Quizplus · Accepted Answer

The sample mean is found by adding all data values and dividing them by n, not n-1. It may or may not be equal to the population mean, depending on whether the sample is representative of the population. There is no general rule that the sample mean is always smaller or larger than the population mean.

The Sample Mean