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18 UNIT 1 Exploring One-Variable Data

6. Which major? More than 2 million students earn 8. More CubeSat missions A CubeSat is a miniature
bachelor’s degrees in U.S. colleges and universities satellite used for space research that can be easily
each year. The pie chart displays data on bachelor’s deployed from a launch vehicle or from the Inter-
degrees earned by field of study in a recent year. 19 national Space Station. More than 1000 CubeSats
About what percentage of students earned their bach- have been launched since specifications for these
elor’s degrees in business? In health professions? In satellites were jointly developed by Cal Poly San Luis
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social science? Obispo and Stanford University in 1999. The side-by-
side bar graph displays data on the types of missions
Biological undertaken by CubeSats launched in 2017 and 2019.
sciences Compare the distributions of mission type for these
two years. 21

Business 60 Mission type
Other Ballast
50 Communications
Education
Education
40 Imaging
Military
Science
Social Health Engineering Percent 30 Technology
science professions
20
Psychology 10
Liberal arts/
Physical science Humanities 0
2017 2019
Field of study Year

Comparing Distributions of Categorical Data 9. Reading for pleasure Researchers surveyed a ran-
7. Far from home A survey asked first-year college dom sample of more than 1300 U.S. tweens (ages
pg 13 students, “How many miles is this college from your 8–12) and teens (ages 13–18) about how often they
permanent home?” Students selected from the fol- read for pleasure. The following table summarizes
lowing options: 5 or fewer, 6 to 10, 11 to 50, 51 to the responses in each age group. 22
100, 101 to 500, or more than 500. The side-by-side
bar graph shows the percentage of students at public Age group
and private 4-year colleges who chose each option. 20 Teens Tweens
Compare the distributions of distance from home for Every day 21% 34%
students from private and public 4-year colleges who
completed the survey. How often they At least once a week 27% 29%
Type of university read for pleasure At least once a month 14% 12%
Less than once a month 20% 12%

35 Private Public Never 18% 13%
30

(a) Make a side-by-side bar graph to compare the
25 distributions of how often teens and tweens read for
Percent 20 pleasure.

15 (b) Describe similarities and differences between the two
distributions.
10
10. Popular car colors Favorite car colors may differ
5
among countries in different parts of the world. The
0 following table summarizes data on the most popular
5 or less 6 to 10 11 to 50 51 to 100 101 to 500 Over 500 5 or less 6 to 10 11 to 50 51 to 100 101 to 500 Over 500 car colors in a recent year for the countries in North
23
America and Asia.
Distance from home (mi)

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