The mean of a sample is
A) always equal to the mean of the population.
B) always smaller than the mean of the population.
C) computed by summing the data values and dividing the sum by (n - 1).
D) computed by summing all the data values and dividing the sum by the number of items.

Question

Quizplus · Accepted Answer

The mean of a sample is computed by summing all the data values and dividing the sum by the number of items. Option A is not always true, as the sample mean can vary from the population mean. Option B is not true either, as the sample mean can be greater than, equal to, or smaller than the population mean. Option C is incorrect as well, as the mean of a sample is computed by dividing by the number of items in the sample, not by (n - 1).

The Mean of a Sample Is