Chapter 1.1, Problem 8C

A circle can be divided into 360 equal units of measure, which we call degrees. In other words, an entire circle is made up of $\mathrm{360\; <mo>\; °\; </mo>}$ (the $°$ symbol represents degrees). Multiply the decimal form of each percentage in Question 6 by $\mathrm{360\; <mo>\; °\; <mo>\; ,\; </mo>\; </mo>}$ and put the results into the next chart. Round to the nearest whole degree.

Degrees
Class
Homework
Sleep
Work
Other

A pie chart is a diagram used to compare the relative sizes of different parts of a whole. For example, the pie chart to the right, adapted from a USA Today survey, describes people’s hand-washing tendencies when using a public restroom. In this case, the whole is the number of people surveyed, and each of the parts is the percentage of folks that gave a certain response. Since 70% of respondents said “Always,” the “Always” category fills 70% of the circle. This represents . (See page 7 for a quick review of percents.) The “Sometimes” category fills 29%, which corresponds to , and the “Never” category just 1%, corresponding to .

Now let’s see if we can build a pie chart that illustrates the amount of time spent on various activities for the student survey that began this lesson.