If all the scores in a distribution are the same value, then the estimated population variance of the scores will be.
A)1.0
B)equal to the mean of the set
C)zero
D)cannot determine without knowing the number of scores in the set

Question

Quizplus · Accepted Answer

If all the scores in a distribution are the same value, there is no variation in the scores, and the denominator of the formula for population variance (n-1) becomes zero, resulting in a variance of zero.

If All the Scores in a Distribution Are the Same