If the variance of a data set is correctly computed with the formula using n - 1 in the denominator, which of the following is true:
A)the data set is a sample
B)the data set is a population
C)the data set could be either a sample or a population
D)the data set is from a census
E)none of the above

Question

Quizplus · Accepted Answer

The use of n - 1 in the denominator for calculating variance indicates that the data set is a sample. This adjustment, known as Bessel's correction, is used to correct the bias in the estimation of the population variance from a sample.

If the Variance of a Data Set Is Correctly Computed