The mean of a sample
A)is always equal to the mean of the population
B)is always smaller than the mean of the population
C)is computed by summing the data values and dividing the sum by (n - 1)
D)is 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 because the mean of the population may not be known. Option B is not always true because the mean of the sample could be larger than the mean of the population. Option C is incorrect because the denominator for the mean of a sample is n, not (n-1).

The Mean of a Sample