Data and charts · Usually met around P6
Line graphs, the mean and pie charts
From “Line graphs” to “Choosing charts, and charts that mislead”, step by step, each skill with its methods, worked examples and answers.
Skills in this topic, easy to hard
- Line graphsCheck the scale, then read each point
- Drawing a line graphIn time order: plot each point, then join them
- The meanTotal ÷ how many
- How a mean changesTotal = mean × how many
- Pie chartsThe whole is 100% or 360°
- Drawing pie charts and surveysOne share's angle = 360° ÷ the total
- Choosing charts, and charts that misleadCompare: bars; change: a line; shares: a pie
Practise it in the game →Line graphs, the mean and pie charts · Free to start, unlimited questions, no downloadAll maths topics →