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Circle Graphs

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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Circle Graphs

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  1. Circle Graphs A step by step how to.

  2. 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.

  3. Step 1: Organize the data in a table.

  4. Step 2: Find the percent of computer owners giving each response. Rememberto find percent set it up as follows… Part x 100 = Percent Whole

  5. 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

  6. Step 4: Use a compass to draw a circle. .

  7. Step 5: Use a protractor to draw sectors having the angle measures found in step 3. 126º .

  8. 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.

  9. 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% Spreadsheets

  10. Step 5: Use a protractor to draw sectors having the angle measures found in step 3. 90º Word Processing 35% 10% Internet access 30% Spreadsheets Label each sector with the corresponding response & percent.

  11. 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% Spreadsheets Label each sector with the corresponding response & percent.

  12. Step 6: Title your circle graph. Computer Use 25% Word Processing Other 35% 10% Internet access 30% Spreadsheets

  13. Example 2 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.

  14. What do we need to do first?

  15. After I organized my data in a table, what should I do next?

  16. Make your circle graph. .

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