An exam was given to two sections of the same course.In Section 1,the exam mean was 51 and the standard deviation was 7.In Section 2,the exam mean was 51 and the standard deviation was 13.Which of the following conclusions is accurate?
A)Section 1 did better on the exam than Section 2.
B)Section 1 scores were more variable than Section 2.
C)Section 1 scores were less variable than Section 2.
D)Section 1 did less well on the exam than Section 2.

Question

Quizplus · Accepted Answer

The standard deviation in Section 1 is smaller than the standard deviation in Section 2, which means that the scores in Section 1 were less spread out than in Section 2.

An Exam Was Given to Two Sections of the Same