Chapter 24: Statistics: representing and analysing data
The chapter problem
A school travel survey
A school wants to describe how pupils travel to school and whether the pattern changes during the year. How could it collect information and show the results fairly?
First contact: Predict which travel method might be most common. You are not being marked; record your prediction and revisit it after learning about samples and charts.
By the end of this chapter
You will be able to:
- plan data collection, choose a sample, and identify limits in what it can show;
- organise categorical and discrete data in tables and suitable charts;
- calculate and compare the mean, median, mode and range;
- find averages from a frequency table;
- read and construct line graphs for data collected over time.
Where this could connect to your life
A survey, club register or team record can use these methods. Where might you or someone you know collect information? Write one example and say what question the data could answer.
Roadmap
- 24.1 Collecting data, sampling and questionnaires
- 24.2 Tables, bar charts, pie charts and pictograms
- 24.3 Averages and range
- 24.4 Averages from frequency tables
- 24.5 Time series and line graphs
- Review
Use Learn for teaching, Practise with help for supported questions, and Practise for independent work.