waecE-LEARNING
Further Mathematics Paper 2, May/June. 2013  
Questions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Main
General Comments
Weakness/Remedies
Strength








Question 6

The table shows the distribution of ages of 22 students in a school.

Age (years)

12 - 14

15 - 17

18 - 20

21 - 23

24 – 26

Frequency

6

10

3

2

1

Using an assumed mean of 19, calculate, correct to three significant figures, the:

  1. mean age;
  2. standard deviation;
    of the distribution.

 

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Observation

This question was reported to be well attempted by majority of the candidates and their performance was commended by the Chief Examiner. Majority of them were reported to have obtained full marks. However, some candidates were reported not to add the mean of the deviations to the assumed mean. Others did not have their answer to the required accuracy. Candidates were reported to have obtained the following table.





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