Edexcel GCSE Statistics · 1ST0
Specification 2a.02, 3p.03 · Paper 1, Paper 2
Revise: Comparative diagrams and pie chart scalingEach circle's area represents its total frequency, while the sector angles show how that total is divided. If one data set contains twice as many people as another, its circle must have twice the area—not twice the radius.
- Revise: Calculating expected frequencies
The whole number of observations or trials being considered, including those that do and do not have the characteristic of interest.