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This topic covers the types of statistical data — qualitative and quantitative, discrete and continuous, primary and secondary — and choosing how to collect and represent each. It's examined right across GCSE and iGCSE Maths. Work through it free on eClassroom, with clear worked examples and instantly-marked questions that build your confidence for the exam.
How you do it
Decide first whether the data is qualitative or quantitative. Quantitative data is discrete if it can be counted and continuous if it is measured. The type decides which chart and which average are appropriate.
Before you start
Start once you are confident with basic data vocabulary. This is the foundation for choosing the right chart and average. This is a Foundation and Higher tier topic.
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
Types of Data is a Data and Statistics topic in the GCSE syllabus, covered here at Foundation tier. It runs to 3 concepts, each followed by a check, with 2 worked examples along the way. Students often pair it with Averages — Frequency Tables, Averages — Grouped Frequency and Averages — Raw Data. You can drill this strand further on the Data and Statistics revision engine, with your accuracy saved to your skill tree.
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