64 CHAPTER 2 Descriptive Statistics 21. Highest-Paid Athletes Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the incomes (in millions) of the top 30 highest-paid athletes. (Source: Forbes Media LLC) 39 42 41 45 48 48 106 45 88 54 61 37 62 74 40 47 56 57 105 96 37 48 41 64 52 47 45 59 49 104 22. Electoral Votes Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the number of electoral votes for each of the 50 states and the District of Columbia. (Source: U.S. Census Bureau) 9 3 11 6 55 9 7 3 3 29 16 4 4 20 11 6 6 8 8 4 10 11 16 10 6 10 3 5 6 4 14 5 29 15 3 18 7 7 20 4 9 3 11 38 6 3 13 12 5 10 3 23. Systolic Blood Pressures Use a dot plot to display the data, which represent the systolic blood pressures (in millimeters of mercury) of 24 patients at a doctor’s office. 120 135 140 145 130 150 120 170 145 125 130 110 160 180 200 150 200 135 140 120 130 170 165 140 24. Life Spans of Houseflies Use a dot plot to display the data, which represent the life spans (in days) of 30 houseflies. 9 9 4 11 10 5 13 9 7 11 6 8 14 10 6 10 10 7 14 11 7 8 6 13 10 14 14 8 13 10 25. Educational Attainment Use a pie chart to display the data, which represent the number of civilian noninstitutionalized U.S. adults (in millions) that have obtained each level of education. (Source: U.S. Census Bureau) Not a high school graduate 26.6 High school graduate 70.9 Some college, no degree 45.0 Associate’s degree 24.5 Bachelor’s degree 53.3 Master’s degree 22.5 Doctoral or professional degree 7.7 26. London Marathon Use a pie chart to display the data, which represent the number of men’s London Marathon winners from each country through 2020. (Source: Britannica) United States 2 Norway 1 United Kingdom 6 Japan 2 Denmark 1 Kenya 15 Soviet Union 1 Portugal 3 Mexico 3 Spain 1 Morocco 2 Ethiopia 4 27. Smartphone Sales The five best-selling smartphone manufacturers of 2020 were Apple (206.1 million units), Huawei (189.0 million units), Samsung (266.7 million units), vivo (111.7 million units), and Xiaomi (147.8 million units). Use a Pareto chart to display the data. (Source: International Data Corporation) 28. Causes of Death The top five causes of death worldwide from January 1, 2020 through March 11, 2021, were lower respiratory infections (about 2,971,000), stroke (about 7,809,000), chronic obstructive pulmonary disease (about 3,910,000), ischemic heart disease (about 10,890,000), and COVID-19 (about 3,068,000). Use a Pareto chart to display the data. (Source: Institute for Health Metrics and Evaluation) 29. Hourly Wages Use a scatter plot to display the data shown in the table at the left. The data represent the number of hours worked and the hourly wages (in dollars) of 12 production workers. Hours Hourly wage 33 17.16 37 14.98 34 15.79 40 16.71 35 16.80 33 16.51 40 18.65 33 17.05 28 15.54 45 15.33 37 16.57 28 15.17 TABLE FOR EXERCISE 29
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