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WAEC Mathematics 1998 Question 20

Question 20

Data Presentation

The following numbers represent a set of scores for a class of 32 students, where the maximum score possible was 12, 6, 5, 9, 4, 4, 8, 7, 5, 6, 3, 2, 5, 4, 6, 9, 10, 4, 3, 2, 3, 4, 6, 8, 7, 4, 2, 1, 8, 7, 7, 6, 11. What percentage of the class, correct to the nearest whole number, scored above 6?

  1. A.34%
  2. B.35%
  3. C.37%
  4. D.38%
  5. E.50%.
Show the answer and explanation

Answer: A (34%)

Explanation

The first 12 is the maximum possible score; the 32 scores after it include 11 above 6 (9, 8, 7, 9, 10, 8, 7, 8, 7, 7, 11). 11/32 × 100% ≈ 34%.