4
QuizMultiple Choice

Mean Absolute Deviation

Question 4 • High School Math 2 A

Veronika’s five test scores are 59, 80, 95, 88, and 93. If the outlier of 59 is removed, what is the mean absolute deviation of the remaining four test scores?

Answer
A
4.5
B
5
C
10.8
D
36

Explanation

After removing 59, the four scores are 80, 95, 88, and 93. Their mean is (80 + 95 + 88 + 93) ÷ 4 = 89. The absolute deviations from 89 are 9, 6, 1, and 4, so the mean absolute deviation is (9 + 6 + 1 + 4) ÷ 4 = 5, choice B.

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