Statistics
Charts tell stories about data — the mean shares it out fairly.
Pie chartsLine graphsThe mean
📖 Learn
Mean
Add all the values, then divide by how many there are.
Pie charts
The whole circle is 360°. Half the pie = half the data.
Line graphs
Great for showing change over time.
Worked example
Mean of 4, 7, 10
- 14 + 7 + 10 = 21
- 221 ÷ 3 = 7 ✅
⭐ Practise
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