Question

Ct the best answer for the question.

11. Suppose that the final exam scores of all statistics students at a nearby college are collected and are found to have mean 82.6, with a standard deviation of 7.5 percentage points. Interpret the value of the standard deviation.

A. All of the scores lie within 7.5 points of the mean score of 82.6.
B. The exam scores differ from the mean by an average of 7.5 points.
C. The average score of 82.6 has a margin of error of 7.5 either way.
D. If a student scores higher than 82.6, their score is at least 7.5 points higher.

Answer 1

B. The exam scores differ from the mean by an average of 7.5 points.

I’m pretty sure this is the answer but let me know if this is incorrect! Good luck!