Data Representation — O/L Mathematics

How do I practise Data Representation?

1 question with a worked solution

1. In a pie chart representing the preferred subjects of 720 students, the sector angle for Mathematics is 80°. How many students prefer Mathematics?
   1. A) 200
   2. B) 180
   3. C) 140
   4. D) 160
   Check my answer

   Correct answer: D) 160

   Total angle of a pie chart is 360°. Number of students = (sector angle / 360°) × total students = (80 / 360) × 720 = 2 × 80 = 160 students.

   Show worked solution

   Step 1: Formula for pie chart value: Value = (Angle / 360°) × Total frequency. Step 2: Substitute values: (80 / 360) × 720. Step 3: Simplify: 720 / 360 = 2; then 80 × 2 = 160. Answer: 160.
   Modelled on: the O/L Mathematics examination pattern

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Where does Data Representation fit in the syllabus?

Grade 10 · Term 1