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 in the sample, which is option D. Option A is not always true because the mean of a sample is an estimate of the mean of the population, but it may not be identical. Option B is false because the mean of a sample can be smaller or larger than the mean of the population, depending on the sample size and variability. Option C is incorrect because (n F1F1F1S1F1F1F10 1) is not a valid formula for computing the mean of a sample.

The Mean of a Sample Is