http://www.ck12.org Chapter 7. Organizing and Displaying Data
36
360 =^0.^1 (^0.^1 )(^200 ) =^20
e. The number of students who participate in volunteer activities can be calculated as follows:
90
360 =^0.^25 (^0.^25 )(^200 ) =^50
f. The number of students who work can be calculated as follows:
54
360 =^0.^15 (^0.^15 )(^200 ) =^30
g.
Practice
- On a recent math test, 9 students out of the 25 who took the test scored above 85. What percentage of the
students scored above 85?
a. 0.36%
b. 3.6%
c. 360%
d. 36% - The following pie chart represents the time spent doing various activities during one day. Using the pie chart,
supply a possible activity that may be represented by each of the percentages shown in the chart. - In a few sentences, explain whether or not you find pie charts helpful for interpreting data.
550 high school students were asked their favorite sport, and the results are shown in the pie chart below. Use the
pie chart to answer the following questions: