Pie charts - JSS2 Mathematics Lesson Note
Definition: Pie charts are circular graphs divided into slices to illustrate numerical proportions. Each slice represents a category's share of a whole, typically expressed as percentages.
Example:
Imagine a survey of favorite ice cream flavors among 100 people:
Chocolate: 40%
Vanilla: 30%
Strawberry: 20%
Others: 10%
To represent this data in a pie chart:
Draw a circle (whole) representing 100%.
Divide it into sectors proportional to each flavor's percentage
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