Pie Charts are also called Circle Graphs and Sector Graphs. They are best for displaying a small number of discrete categories. A common example is the display of opinion poll results being Yes/No (only two categories).
The procedure for creating a pie chart is:
Ecuador in South America has a wide biodiversity of colourful birds, but also spends few government funds to stop wildlife smuggling. Below is a table showing the most commonly smuggled animals, most of whom die before reaching their destination. Draw a pie chart of this data.
SMUGGLED ANIMAL | NUMBER SMUGGLED IN ONE WEEK |
Macaw | 35 |
Jaguar | 4 |
Capuchin monkey | 64 |
Spider monkey | 47 |
Answer:
SMUGGLED ANIMAL | NUMBER SMUGGLED IN ONE WEEK | WORKING | ANGLE |
Macaw | 35 | 35⁄150 × 360 = 84 | 84 degrees |
Jaguar | 4 | 4⁄150 × 360 = 9.6 | 10 degrees |
Capuchin monkey | 64 | 64⁄150 × 360 = 153.6 | 154 degrees |
Spider monkey | 47 | 47⁄150 × 360 = 112.8 | 113 degrees |
TOTAL | 150 |
When 100 people were surveyed as to whether the government should spend more money to prevent wildlife smuggling, the responses were:
Draw a pie chart with this information.
Democracy in Ancient Greece where the concept originated was quite different to our contemporary understanding of the term. To be eligible to vote, a person had to be a male born in Athens and over 20 years old. Women and slaves were not permitted to cast their votes.
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