WAEC Mathematics 2018 Objective — Question 45
Question 45 of 50 from the West African Examinations Council (WAEC) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
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Find the mean deviation of 20, 30, 25, 40, 35, 50, 45, 40, 20 and 45
- A. 8
- B. 9Correct
- C. 10
- D. 12
Explanation
Mean = 350/10 = 35. Sum of absolute deviations = 90. Mean deviation = 90/10 = 9.
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