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This topic draws and interprets statistical charts — bar charts, pictograms, pie charts and line graphs — and chooses an appropriate one for the data. It's a core topic in GCSE and iGCSE Maths with Edexcel and the other major boards. This free interactive eClassroom course walks through each step with worked examples and instant-feedback questions, so you can practise until it's secure.
How you do it
Match the chart to the data: bar charts for categories, pie charts for proportions, line graphs for change over time, scatter graphs for relationships. Label the axes and use a sensible scale. For a pie chart, divide 360 by the total to find the degrees per item.
Before you start
The groundwork here is reading scales and data types. It sets up comparing distributions. You meet it at Foundation and Higher tier.
What you learn
Charts turn a table of numbers into a picture you can read at a glance. A bar chart shows category data as bars of equal width; the height gives the frequency. A pie chart shows how a total is split into parts. A scatter graph plots two things together to see if they are related. The course works through bar charts and pictograms, pie charts and scatter graphs. Every section has instant-feedback practice questions matched to Edexcel iGCSE 4MA1 and the other major GCSE boards, and the course finishes with full exam-style questions you mark yourself.
Related Topics
Charts & Diagrams is part of the Data and Statistics strand of our free GCSE maths courses, studied in Foundation tier. The course is built from 3 concept sections, 2 worked examples and 3 check points before the exam-style set. It sits alongside Comparing Distributions, Cumulative Frequency and Histograms in the same strand. For unlimited practice, the Data and Statistics revision engine builds new questions on demand and records your accuracy.
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