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OAU Post-UTME Mathematics 2021 (Batch B) Question 4

Question 4

Measures of Dispersion

Calculate the mean deviation of the following scores: 1, 5, 7, 8, 9.

  1. A.1.5
  2. B.2.4
  3. C.2.6
  4. D.6.0
Show the answer and explanation

Answer: B (2.4)

Explanation

Mean = 30/5 = 6. Distances from 6: 5, 1, 1, 2, 3, total 12. Mean deviation = 12/5 = 2.4.