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78 UNIT 1 Exploring One-Variable Data

(A) Mean will increase and standard deviation will (A) (D)
increase.
(B) Mean will increase and standard deviation will 0 2 4 6 8 10 12 0 2 4 6 8 10 12
decrease. Data Data
(C) Mean will increase and standard deviation will
stay the same. (B) (E)
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(D) Mean will decrease and standard deviation will
increase. 0 2 4 6 8 10 12 0 2 4 6 8 10 12
(E) Mean will decrease and standard deviation will Data Data
decrease.
45. The stemplot shows the number of home runs hit by (C)
each of the 30 Major League Baseball teams in a single
season. Home run totals greater than what value should 0 2 4 6 8 10 12
be considered outliers? Data

Recycle and Review Practice what you learned in previous sections.
09 15
10 3789 47. How tall are you? (1C) We chose a random sample of
11 47 50 Canadian students who completed an online survey
12 19 that included the question, “How tall are you without
13 your shoes on? Answer to the nearest half-centimeter.”
14 89
15 34445 Here are the students’ responses:
16 239 166.5 170.0 178.0 163.0 150.5 169.0 173.0 169.0 171.0 166.0
17 223
18 356 190.0 183.0 178.0 161.0 171.0 170.0 191.0 168.5 178.5 173.0
19 1 175.0 160.5 166.0 164.0 163.0 174.0 160.0 174.0 182.0 167.0
20 3 Key: 14|8 is a
21 0 team with 148 166.0 170.0 170.0 181.0 171.5 160.0 178.0 157.0 165.0 187.0
22 2 home runs. 168.0 157.5 145.5 156.0 182.0 168.5 177.0 162.5 160.5 185.5
Make an appropriate graph to display the data. Describe
(A) 173 the shape, center, and variability of the distribution.
(B) 210 Are there any outliers?
(C) 222 48. Climate change insurance? (1A, 1B) Qualtrics con-
ducted a survey of 1070 randomly selected U.S.
(D) 229 homeowners. Respondents were asked, “How much extra
(E) 257 would you be willing to spend per year on insurance pol-
icies that focus on coverage for climate change–induced
46. Which of the following boxplots best matches the dis- risks?” The bar graph summarizes the responses. 91
tribution shown in the histogram?
45
40
35
30
Percent 25
20
15
10
5
0 2 4 6 8 10 12
Data 0
Nothing $500 or less $501–$750 $751 –$1000 More than
Amount extra you are willing to spend $1000

(a) Identify the individuals and the variable displayed in
the bar graph. Is the variable categorical or quantita-
tive? Justify your answer.
(b) Describe what you see.

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