JAMB Economics 2000 Question 3

Question 3

Tools of Economic Analysis

Use the histogram to answer the question (scores on the horizontal axis, number of students on the vertical axis).
How many students took the examination?

A.280
B.240
C.200
D.80.

Show the answer and explanation

Answer: A (280)

Explanation

Add the bar heights: 40 (0–19) + 80 (20–39) + 100 (40–59) + 40 (60–69) + 20 (70–100) = 280.