### Home > MC2 > Chapter 6 > Lesson 6.1.2 > Problem6-16

6-16.

A class surveyed how students at their school travel to school. The results of the survey are shown in the table below. Make a circle graph showing the results of the survey using percentages.

Mode of Transportation

Number of Students

Bus

$90$

Ride Bike

$30$

Ride in Car

$75$

Walk

$45$

Find the students using each mode of transportation as a percentage of all the students.

Each category of data is then represented by a portion of the circle. The measure of the angle of each sector portion is directly proportional to the corresponding percentage.

Consider the bike riders.
$\frac{30}{240}=0.125$ of the students population ride bikes to school.
Proportionately as an angle, this would be $12.5\%$ of $360°$ (a whole circle). This equates to $0.125(360°)=45°$.