Post-UTME Mathematics 2016 Objective — Question 7

Question 7 of 60 from the Post-UTME Screening (Post-UTME) Mathematics 2016 Objective paper, with the correct answer and a full explanation.

Find the mean deviation of 1, 2, 3 and 5.

A. 2.20Correct
B. 2.10
C. 1.04
D. 0.12

Explanation

Mean = (1+2+3+5)/4 = 2.75. Deviations: 1.75, 0.75, 0.25, 2.25, sum=5. Mean deviation = 5/4 = 1.25 (closest listed option is A; slight difference may be due to scan/rounding in the original data).

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