circle graphs a step by step how to.. example 1 a software company asked 60 owners what they use...
DESCRIPTION
Step 1: Organize the data in a table. NumberPercentAngle Measure Word Processing 21 Spreadsheets18 Internet access6 Other15 TOTAL60TRANSCRIPT
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.
Step 1: Organize the data in a table.
Number Percent Angle Measure
Word Processing
21
Spreadsheets 18
Internet access 6
Other 15
TOTAL 60
Step 2: Find the percent of computer owners giving each response.
Number Percent(Fraction x 100)
Angle Measure
Word Processing
21 21 x 100 = 35%60
Spreadsheets 18 18 X 100 = 30%60
Internet access 6 6 X 100 = 10%60
Other 15 15 X 100 = 25%60
TOTAL 60 100 %
Remember to 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.
Number Percent Angle Measure
Word Processing
21 35%
Spreadsheets 18 30%
Internet access 6 10%
Other 15 25%
TOTAL 60 100% 360º
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
Word Processing
108º
Step 5: Use a protractor to draw sectors having
the angle measures found in step 3.
Label each sector with the corresponding response & percent.
35%
Step 5: Use a protractor to draw sectors having
the angle measures found in step 3.
Word Processing
Spreadsheets
36º
Label each sector with the corresponding response & percent.
35%
30%
Step 5: Use a protractor to draw sectors having
the angle measures found in step 3.
Word Processing
Spreadsheets
Internet access
Label each sector with the corresponding response & percent.
35%
30%
10%
90º
Step 5: Use a protractor to draw sectors having
the angle measures found in step 3.
Word Processing
Spreadsheets
Internet access
Label each sector with the corresponding response & percent.
35%
30%
10%
25%
Other
Step 6: Title your circle graph.
Word Processing
Spreadsheets
Internet access
35%
30%
10%
25%
Other
Computer Use
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 = 109 blue = 51 green = 23 yellow = 95 brown = 31 orange = 46 purple = 61
Make a circle graph to show the percent of each color of the M & M’s in the 1 pound bag.