Professor Archer administered a diagnostic statistics exam to the 35 students in

Question

Professor Archer administered a diagnostic statistics exam to the 35 students in his introductory finance course. The diagnostic was designed to gauge their skill level with statistics, and the average score was 73. Naturally, Professor Archer wants his students to be more proficient with statistics, because otherwise it could serve as a barrier to their progress in finance. He therefore assigns a supplementary statistics teaching module and a follow-up problem set to strengthen their skills. The summary statistics of his students' performance on the problem set is shown below: What is the range of the grades on the follow-up problem set? 98.17 5.12 25 26.17 87 What is the standard deviation of the grades on the follow-up problem set? 77.70 25 5.12 88 87 The mean and median are pretty close to each other, which suggests that the distribution of scores might be ____.

Explanation / Answer

Range = maximum value - minimum value

= 98 - 73

= 25

Standard deviation = (variance) = 26.17 = 5.12

The mean and median are pretty close to Normal distribution

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