Year 11 (2025) Maths Standard (2025)
Classifying Data
Grouped Frequency Tables
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Questions
Question 1
15390
The ages of students at a school were recorded.
| Class | Class centre | Frequency |
|---|---|---|
| \(4\text{–}6\) | \(5\) | \(98\) |
| \(7\text{–}9\) | \(8\) | \(198\) |
| \(10\text{–}12\) | \(11\) | \(212\) |
| \(13\text{–}15\) | \(14\) | \(245\) |
| \(16\text{–}18\) | \(17\) | \(204\) |
| Total | \(957\) |
(a) How many students are younger than \(10\)?
(b) What is the modal class?
(c) What percentage of students are older than \(15\)? Give your answer correct to \(1\) decimal place.
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