492 CHAPTER 9 Correlation and Regression 22. Length and Girth of Harbor Seals The lengths (in centimeters) and girths (in centimeters) of 12 harbor seals (Adapted from Moss Landing Marine Laboratories) Length, x 137 168 152 145 159 159 Girth, y 106 130 116 106 125 119 Length, x 124 137 155 148 147 146 Girth, y 103 104 120 110 107 109 (a) x = 140 centimeters (b) x = 172 centimeters (c) x = 164 centimeters (d) x = 158 centimeters 23. Hot Dogs: Caloric and Sodium Content The caloric contents and the sodium contents (in milligrams) of 12 brands of beef hot dogs (Source: Walmart) Calories, x 180 220 230 90 160 190 Sodium, y 510 740 740 280 530 580 Calories, x 150 110 110 160 140 150 Sodium, y 490 480 330 640 480 460 (a) x = 170 calories (b) x = 100 calories (c) x = 260 calories (d) x = 210 calories 24. Employees and Revenue The number of employees and the 2020 revenue (in millions of dollars) of 14 hotel and gaming companies (Adapted from Value Line) Employees, x 9000 42,000 18,000 19,700 7600 7300 30,200 Revenue, y 1300 5162 2886 1728 1182 1964 2096 Employees, x 14,300 7000 46,000 800 2600 141,000 15,500 Revenue, y 2179 1054 3612 316 615 10,571 2160 (a) x = 32,500 employees (b) x = 6000 employees (c) x = 1350 employees (d) x = 100,000 employees 25. Shoe Size and Height The shoe sizes and heights (in inches) of 14 men Shoe size, x 8.5 9.0 9.0 9.5 10.0 10.0 10.5 Height, y 66.0 68.5 67.5 70.0 70.0 72.0 71.5 Shoe size, x 10.5 11.0 11.0 11.0 12.0 12.0 12.5 Height, y 69.5 71.5 72.0 73.0 73.5 74.0 74.0 (a) x = size 11.5 (b) x = size 8.0 (c) x = size 15.5 (d) x = size 10.0
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