A class's mean score on the midterm exam was 78.2, and the standard deviation was 15.8. The class's mean score on the final exam was 81.3, with a standard deviation of 4.5. From these statistical data, one can interpret which of the following?
A) The class performed much better on the midterm exam than on the final exam.
B) There was more variability in the scores on the final exam than on the midterm exam.
C) The most common score on the final exam was lower than the most common score on the midterm exam.
D) There was more variability in the scores on the midterm exam than on the final exam.
Correct Answer:
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