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WAEC Mathematics 2004 Question 28

Question 28

Measures of Dispersion

Find the mean deviation of 6, 7, 8, 9, 10

  1. A.1.2
  2. B.1.5
  3. C.2
  4. D.8
Show the answer and explanation

Answer: A (1.2)

Explanation

Mean = 8. The distances from the mean are 2, 1, 0, 1, 2, total 6, so the mean deviation = 6/5 = 1.2.