Name: ______________________
Mr. Art
Date: _________
Period: _______
Circle Graphs
Creating
Example 1: Twenty people were surveyed to find out their favorite musician.
The results are in the table below.
Complete the table and then use your protractor to create a circle graph to display the results.
Musician
Votes
Jon Bon Jovi
10
Kanye West
4
Britney
Spears
2
Beyonce
4
TOTAL
20
Fraction
Decimal
Percent
Angle
Amt. of Votes
Total Votes
Divide
fraction to
get decimal
Change fraction
or decimal to
percent
Multiply decimal
times 360 degrees
(part of whole circle)
20
20
1.0
100%
3600
The angles in a circle graph are called central angles. A central angle has its vertex at the center of
the circle. Use your calculations from the last column of the table to measure and draw the central
angles. Be sure to include a title and labels for your circle.
C1
Example 2: Survey your classmates and collect data on the number of pets they
have. Keep track of the responses in the table below.
Complete the table and then use your protractor to create a circle graph to display the results.
Number of
Pets
Votes
Fraction
Decimal
Percent
Angle
Amt. of Votes
Total Votes
Divide
fraction to
get decimal
Change fraction
or decimal to
percent
Multiply decimal
times 360 degrees
(part of whole circle)
1.0
100%
3600
0
1
2
3 or more
TOTAL
_____________________________________________
Example 3: Which one of the following teachers would you recommend for the
“Teacher of the Year” Award? Fill in the table, create a circle graph,
and then answer the question!
Teacher
Votes
Mr. Brain
67
Mr. Knowitall
89
Ms.
Imneverwrong
161
Mrs. Algebra
83
Fraction
Decimal
Percent
Angle
TOTAL
_____________________________________________
The “Teacher of the Year” Award goes to: ________________________________