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JAMB Mathematics 2007 Question 10

Question 10

Data Presentation

The cumulative frequency for 5 ≤ x ≤ 12 from the distribution above is

Diagram for this question
  1. A.40
  2. B.72
  3. C.22
  4. D.46
Show the answer and explanation

Answer: B (72)

Explanation

Read f at x = 5, 6, ..., 12 from the graph: 10 + 12 + 10 + 8 + 6 + 8 + 10 + 8 = 72.