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WAEC Mathematics 2019 Question 49

Question 49

Measures of Central Tendency

The following are scores obtained by some students in a test: 8, 18, 10, 14, 18, 11, 13, 14, 13, 17, 15, 8, 16, 13. Find the median score.

  1. A.14.5
  2. B.14.0
  3. C.13.5
  4. D.13.0
Show the answer and explanation

Answer: C (13.5)

Explanation

In order the 14 scores are 8, 8, 10, 11, 13, 13, 13, 14, 14, 15, 16, 17, 18, 18. The middle two are 13 and 14, so the median is 13.5.