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Year 11 (2026) Maths Standard (2026) Data Analysis 1

Grouped Frequency Tables

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Questions
Question 1
15390

The ages of students at a school were recorded.

a) How many students are younger than 10?
b) Which class occurred the most?
c) What percentage of students were older than 15?

\[\begin{array}{ | c | c | c| }
\hline \quad \text{Class} \quad & \quad \text{Class Centre} \quad & \quad \text{Frequency } \quad \\
\hline 4-6& 5&98\\
\hline 7-9 & 8&198\\
\hline 10-12& 11&212\\
\hline 13-15& 14&245\\
\hline 16-18& 17&204\\
\hline & \text{Total}& 957\\
\hline \end{array}\] 

 

a) 296 b) Class 13-15 c) 21.3%

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