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Pie Charts

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by

Mr Mattock

on 16 March 2018

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Transcript of Pie Charts

Pie Charts
Starter
The key to pie charts...
Key question: How many degrees does each person or thing get?
Drawing a pie chart
L.O. - Draw and interpret pie charts.
Which combination of subjects makes up more
than half of the favourites?
Drawing a pie chart
360 degrees = 30 people
12 degrees = 1 person
Degrees
240
72
12
12
24
Interpreting Pie Charts
45 people were surveyed as to the number of siblings that they had. The results are shown in the pie chart below. How many people had less than 3 siblings?
Interpreting Pie Charts
45 people were surveyed as to the number of siblings that they had. The results are shown in the pie chart below. How many people had less than 3 siblings?
45 people =
360 degrees.

1 person =
8 degrees.

24+112+56 = 192 degrees.

192 8 = 24 people
Main Activity
Main Activity RAG sheet
Red:
Starter
Which combination of subjects makes up more
than half of the favourites?
Plenary
Plenary
Activities
Activity
Answers

Key
Examples

Worked
Example

Worked
Example

Interpreting Pie Charts
People were surveyed as to the number of siblings that they had. The results are shown in the pie chart below. If 12 people had no siblings, how many people had 3 siblings?
Interpreting Pie Charts
People were surveyed as to the number of siblings that they had. The results are shown in the pie chart below. If 12 people had no siblings, how many people had 3 siblings?
Worked
Example
24
360
X ? = 12 people
12/24 x 360 = ?

? = 180

88
360
x 180 = 44 people
Full transcript