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WAEC Mathematics 2012 Objective — Question 30

Question 30 of 50 from the West African Examinations Council (WAEC) Mathematics 2012 Objective paper, with the correct answer and a full explanation.

(Using the same bar chart as Q29) Calculate the mean of the distribution.

Diagram for question 30

A. 6.0
B. 3.0
C. 2.4Correct
D. 1.8

Explanation

Mean = Σfx/Σf, computed from the bar chart's frequency distribution = 2.4.

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