Topic summary · Foundation · CIE Core

Graphical Representation of Data summary

Choosing and reading charts — bar charts, pie charts, line graphs — is about clear scales and what each representation emphasises.

Open Learning Sheet — Graphical Representation of Data Download Graphical Representation of Data answers PDF

Files: foundation-5 Graphical Representation of Data.pdf · foundation-5 Graphical Representation of Data answers.pdf · free public downloads · diagrams in the PDFs

Key learning points

Bar charts compare categories; line graphs show change over time; pie charts show parts of a whole.
Angles in a pie chart: $\frac{\text{frequency}}{\text{total}}\times360^\circ$ .
Misleading graphs often abuse truncated axes — read scales carefully.

Worked example 1 — Pie chart angle

Frequency 15 out of 60. Angle?

Working

90^\circ

Fraction of $360^\circ$ .

Worked example 2 — Bar chart

Bar reaches 12 on the frequency axis. Frequency?

Working

12

Read the scale.

Worked example 3 — Comparing groups

What must dual bar charts share?

Working

\text{a common scale}

Fair comparison.

Scaffolded Learning Sheet and answers (PDFs)

This page is a short, searchable overview for revision and search engines. Use the Scaffolded Learning Sheet first, then the Answers PDF for a full written solution. The printable PDFs remain the main classroom resource.

Open Learning Sheet Answers PDF

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