The students at Mastermind Public School were asked the following question:
"Which of the following math teachers would you recommend for the 'Teacher of the Year Award'?"
The following table shows the results
Teacher
How many voted for this teacher
Fraction of those who voted for this teacher
Percentage of those who voted for this teacher
Measurement of central angle
Mr. Brian
67
67/400
16.75%
Mr. Knowitall
89
89/400
22.25%
Ms. Calculus
161
161/400
40.25%
Ms. Imneverwrong
83
83/400
20.25%
Total (Verfication)
400
Note: Totaling each column will verify your calculations.
Using a protractor construct a circle graph by using some of the skills you have learned from geometry and the information from the above table. (Hint: You will need to convert the percent who voted for each teacher into a fraction of 360º).
Section B
At a local music store, 250 people were surveyed about their favourite Canadian artist. The table below shows the results. Complete the table and then construct a circle graph by hand to display the data.
Canadian Music Artist
People surveyed
Percentage
Measurement of central angle
Anne Murray
31
Bryan Adams
52
Alanis Morrisette
45
Céline Dion
90
Alana Miles
32
Total
What can you generalize from the information presented in the above table?
If you owned this music store which artists would you stock? Is there any other information you would like before making your decision?