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WAEC Further Mathematics 2024 Question 36

Question 36

Statistics

The scores of some students in a class test are 4, 6, 1, 8, 9, 5 and 2. Calculate, correct to one decimal place, the mean deviation of their scores.

  1. A.2.3
  2. B.2.7
  3. C.5.0
  4. D.5.2
Show the answer and explanation

Answer: A (2.3)

Explanation

Mean = 35/7 = 5. Absolute deviations 1, 1, 4, 3, 4, 0, 3 add to 16. Mean deviation = 16/7 ≈ 2.3.