Exam

ACT

Section

Difficulty

ACT Math Section

Standard Deviation Comparison of Class Scores

Hard Preparing For Higher Math Statistics And Probability

A statistics student is analyzing the test scores of three classes on a final exam. The recorded scores for each class are as follows:

Class A: 82, 90, 76, 85, 94
Class B: 88, 92, 84, 79, 90
Class C: 75, 80, 85, 78, 70

Which class has the highest standard deviation in their scores?

A

Class A

B

Class B

C

Class C

D

All classes have the same standard deviation

Hint

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