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# Circle Graphs - PowerPoint PPT Presentation

Circle Graphs. A step by step how to. Example 1. A software company asked 60 owners what they use their computers for most. Of these owners, 21 said word processing, 18 said spreadsheets, 6 said Internet access, and 15 had other responses. Use a circle graph to display these results.

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## PowerPoint Slideshow about ' Circle Graphs' - bianca

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Presentation Transcript

### Circle Graphs

A step by step how to.

A software company asked 60 owners what they use their computers for most. Of these owners, 21 said word processing, 18 said spreadsheets, 6 said Internet access, and 15 had other responses. Use a circle graph to display these results.

Step 1: Organize the data in a table.

Step 2: Find the percent of computer owners giving each response.

Rememberto find percent set it up as follows…

Part x 100 = Percent

Whole

Step 3: Use these percents to find the angle measures of the sectors

of the circle graph.

To find the angle measure, multiply the percent by 360º.

0.35 x 360º = 126º

0.30 x 360º = 108º

0.10 x 360º = 36º

0.25 x 360º = 90º

Step 4: Use a compass to draw a circle.

.

Step 5: Use a protractor to draw sectors having

the angle measures found in step 3.

126º

.

Step 5: Use a protractor to draw sectors having

the angle measures found in step 3.

Word Processing

35%

108º

Label each sector with the corresponding response & percent.

Step 5: Use a protractor to draw sectors having

the angle measures found in step 3.

Word Processing

35%

36º

30%

Step 5: Use a protractor to draw sectors having

the angle measures found in step 3.

90º

Word Processing

35%

10%

Internet access

30%

Label each sector with the corresponding response & percent.

Step 5: Use a protractor to draw sectors having

the angle measures found in step 3.

25%

Word Processing

Other

35%

10%

Internet access

30%

Label each sector with the corresponding response & percent.

Step 6: Title your circle graph.

Computer Use

25%

Word Processing

Other

35%

10%

Internet access

30%

Recently, in our afternoon tutoring we counted the candy colors in a 1 pound bag of M & M’s. We came up with the following data…

red = 109blue = 51green = 23yellow = 95brown = 31orange= 46 purple = 61

Make a circle graph to show the percent of each color of the M & M’s in the 1 pound bag.

Step 1: Organize the data in a table.

46

51

23

109

Yellow

95

31

Brown

Purple

61

11 %

46

51

12 %

23

6 %

109

26 %

Yellow

95

23 %

31

8 %

Brown

Purple

61

15%

40º

46

51

12 %

43º

23

6 %

22º

109

26 %

94º

Yellow

95

23 %

83º

31

8 %

29º

Brown

Purple

61

15 %

54º

&

Do circle graph worksheet #2.