Two groups of students took the same test. Their results are indicated in the dot plot below.


Which statement is true?

answers:

A. Based on visual inspection, Group B appears to have less variability in scores than Group A.

B. Because Group A has a lower minimum score than Group B, it has a lower median as well.

C. Because both distributions have a mean score of 80, they are very similar in terms of variability.

D. Based on visual inspection, Group A appears to have a higher average score than Group B.