Sector- A sector of a circle formed by 2 radii and the arc of the circle connection the 2 radii.
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Example of a General Graph and a more Specific Graph
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How many were asked ?
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1) Title = Pets of students in Mr.W's class (24 students)
2) What are the different categories represented by the graph ?
- Cat, Dog, Other, No pets .
3) What percent of the class has a dog ? How many have a dog ?
- 25 % of the class has a dog .
- 6 kids have a dog
4) What percent of the class has a cat ? How many have a cat ?
- 33 % of the class has a cat .
- 1/3 of 24 = 8 Kids have a cat .
5) What percent of the circle is represented by all the sectors ?
- 100 %
6) Would this graph make sense if the title or sector labels were missing ?
- No, because then we wouldn't understand what the graph is all about .
Create your own Circle Graph on : http://www.mathplayground.com/piechart.html
Watch a video about circle graphs : http://www.youtube.com/watch?v=jFg-e51Rhv4
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