If a distribution of scores has a mean of 30 and a range of 0:
A) the variance is 30
B) the interquartile range (Q) is 10
C) there is no dispersion in the distribution
D) the standard deviation is 1

Question

Quizplus · Accepted Answer

If the range is 0, it means that all the scores are the same as the mean. Therefore, there is no dispersion in the distribution, and all scores are identical, leading to no variability.

If a Distribution of Scores Has a Mean of 30