WAEC - Further Mathematics (2014 - No. 19)
| Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
| Frequency | 6 | 8 | 14 | 10 | 12 |
In which group is the upper quartile?
15 - 19
20 - 24
25 - 29
30 - 34
Explanation
The upper quartile occurs at the \(\frac{3N}{4}\) position.
= \(\frac{3 \times 50}{4} = 37.5\)
This occurs in the class 25 - 29.
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