StatisticsDeep Dive

Reading and Interpreting Pie Charts

Part of Pie Charts · GCSE GCSE Mathematics revision

This deep dive covers Reading and Interpreting Pie Charts within Pie Charts for GCSE Mathematics. Revise Pie Charts in Statistics for GCSE Mathematics with 14 exam-style questions and 20 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 5 of 8 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 5 of 8

Practice

14 questions

Recall

20 flashcards

Reading and Interpreting Pie Charts

Finding Values from Angles

Formula: Value = (Angle ÷ 360°) × Total

Example: Reading a Pie Chart

A pie chart shows how 240 people travel to work. The "Car" sector has an angle of 150°. How many people travel by car?

Solution:

Value = (150° ÷ 360°) × 240 = (5/12) × 240 = 100 people

Comparing Sectors

Largest sector: Represents the modal category
Equal sectors: Have the same frequency
Sector comparisons: Can be made using angles or percentages

Converting to Percentages

Formula: Percentage = (Value ÷ Total) × 100%

Or: Percentage = (Angle ÷ 360°) × 100%

Keep building this topic

Read this section alongside the surrounding pages in Pie Charts. That gives you the full topic sequence instead of a single isolated revision point.

Pie Chart Example: Favorite Subjects Exam Tips for Pie Charts Visualizing Parts of a Whole Key Facts About Pie Charts

Practice Questions for Pie Charts

A pie chart shows the results of a survey about favourite holiday destinations. The sectors have the following angles: - Beach: 144° - City: 90° - Countryside: 72° - Mountains: 54° Which destination is the modal category?

A. Beach
B. Countryside
C. City
D. Mountains

1 markfoundation

A newspaper reports that a pie chart shows Company A has a 'dominant market share' in the smartphone industry, with their sector taking up nearly half the chart. A critic argues that the pie chart is misleading. Explain two limitations of using a pie chart in this context, and suggest what additional information would make the chart more useful.

4 markschallenge

Quick Recall Flashcards

What is a pie chart?

A pie chart is a circular diagram divided into sectors, where each sector represents a category of data. The size of each sector is proportional to the frequency or amount it represents.

What are the steps to draw a pie chart?

1. Calculate each sector angle 2. Check angles add to 360° 3. Draw a circle with compass 4. Mark center and draw radius 5. Use protractor to measure each angle 6. Label each sector 7. Add title and legend

14 questions on Pie Charts — practise free

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Pie Chart Example: Favorite Subjects

Exam Tips for Pie Charts