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JAMB Mathematics 1995 Question 42

Question 42

Data Presentation

Ages in years: 13, 14, 15, 16, 17
No. of students: 3, 10, 30, 42, 15
The frequency distribution above shows the ages of students in a secondary school. In a pie chart constructed to represent the data, the angles corresponding to the 15 years-old is.

  1. A.27°
  2. B.30°
  3. C.54°
  4. D.108°
Show the answer and explanation

Answer: D (108°)

Explanation

There are 100 students, and 30 are 15 years old. Angle = 30/100 × 360° = 108°.