A50 ODD ANSWERS 11. 13, 13, 14, 14, 14, 15, 15, 15, 15, 15, 16, 17, 17, 18, 19 Max: 19; Min: 13 13. Sample answer: Facebook has the most users, and TikTok has the least. Instagram and WeChat have about the same number of users. 15. Sample answer: The Texter is the least popular driver. The Left-Lane Hog is tolerated more than the Tailgater. The Speedster and the Drifter have the same popularity. 17. Exam Scores 6 7 8 Key: 60 7 = 67 7 3 5 5 6 9 8 0 0 2 3 5 5 7 7 8 9 0 1 1 1 2 4 5 5 Sample answer: Most grades for the biology midterm were in the 80s or 90s. 19. Ice Thickness (in centimeters) 4 3 9 Key: 40 3 = 4.3 5 1 8 8 8 9 6 4 8 9 9 9 7 0 0 2 2 2 5 8 0 1 Sample answer: Most of the ice had a thickness of 5.8 centimeters to 7.2 centimeters. 21. Incomes (in millions) of Highest Paid Athletes 3 Key: 30 7 = 37 3 7 7 9 4 0 1 1 2 4 5 5 5 7 7 8 8 8 9 5 2 4 5 6 7 9 6 1 2 4 6 7 4 7 8 8 8 9 9 6 10 4 10 5 6 Sample answer: Most highly paid athletes have an income around $40 million. 23. Systolic blood pressure (in mmHg) 105 115 125 135 145 155 165 175 185 195 205 Sample answer: Systolic blood pressure tends to be from 120 to 150 millimeters of mercury. 25. High school graduate 28% Doctoral or professional degree 3% Some college, no degree 18% Associate’s degree 10% Bachelor’s degree 21% Master’s degree 9% Not a high school graduate 11% U.S. Adults (in thousands) Level of Education Sample answer: The majority of U.S. adults are high school graduates. 27. Smartphone manufacturer Units sold (in millions) Samsung Apple 40 80 120 160 200 240 280 Xiaomi Huawei Vivo Top Five Best-Selling Smartphone Manufacturers of 2020 Sample answer: Samsung sold the most smartphones out of the five manufacturers and Vivo sold the least. 29. Hourly wage (in dollars) Hours Hourly Wages 25 30 35 40 45 50 14 15 16 17 18 19 20 Sample answer: It appears that there is no relation between hourly wages and hours worked. 31. Year Bachelor’s degrees in engineering (in thousands) Engineering Degrees 2011 2012 2013 2014 2015 2016 2017 2018 2019 90 100 110 120 130 140 150 Sample answer: The number of bachelor’s degrees in engineering conferred in the U.S. has increased from 2011 to 2019. 33. Heights (in inches) 7 224 Key: 70 2 = 72 7 5 5 5 5 6 8 1 1 2 2 2 4 8 The dot plot helps you see that the data are clustered from 72 to 76 and 81 to 84, with 75 being the most frequent value. The stem-and-leaf plot helps you see that most values are 75 or greater.
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