WAEC Mathematics 2014 Objective — Question 19
Question 19 of 50 from the West African Examinations Council (WAEC) Mathematics 2014 Objective paper, with the correct answer and a full explanation.
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The table shows the distribution of the height of plants in a nursery (Height: 2,3,4,5,6; Frequency: 2,4,5,3,1). Calculate the mean height of the plants.
- A. 3.8Correct
- B. 3.0
- C. 2.8
- D. 2.3
Explanation
Mean = Σfx/Σf = (2×2+3×4+4×5+5×3+6×1)/15 = 57/15 = 3.8.
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