Question

The mean score for a math test taken by Class A is 84, with the scores ranging from 78 to 94. The mean score for the same math test taken by Class B is 76, with the scores ranging from 68 to 88. Which BEST compares the scores of the two classes?

A) The highest score for the test was in Class B.
B) On average, the scores of Class A are lower than Class B.
C) On average, the scores of Class B are lower than Class A.
D) The scores of Class A vary more than the scores of Class B.
D) 22

Answer 1

C

Explanation:

mean score class A= 84

mean score class B= 76

the average/mean scores of class B< average/mean scores of class A

76<84

by process of elimination,

B is false- the mean scores class A are not lower than class B

A is false- the highest score is in class A with a score of 94 (highest score in class B=88)

D- not enough information is provided to determine coefficient of variation