WAEC Mathematics 2014 Objective — Question 42
Question 42 of 50 from the West African Examinations Council (WAEC) Mathematics 2014 Objective paper, with the correct answer and a full explanation.
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In a cumulative frequency graph, the lower quartile is 18 years while the 60th percentile is 48 years. What percentage of the distribution is at most 18 years or greater than 48 years?
- A. 15%
- B. 35%
- C. 65%Correct
- D. 85%
Explanation
At most 18 years = 25% (lower quartile = 25th percentile). Greater than 48 years (60th percentile) = 40%. Total = 25%+40% = 65%.
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