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

Question

Quizplus · Accepted Answer

When computing the variance with n - 1 in the denominator, it is using the formula for the sample variance. Therefore, the data set must be a sample, not a population or census.

If the Variance of a Data Set Is Correctly Computed