Test Bank for Basic Statistics for Business and Economics 9th Edition Douglas Lind, William Marchal, Samuel Wathen

Test Bank for Basic Statistics for Business and Economics 9th Edition Douglas Lind, William Marchal, Samuel Wathen Chapter 2 Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation 1. Pepsi-Cola has a 25% market share, found by 90/360. (LO2-2) 2. Three classes are needed, one for each player. (LO2-1) 3. Season Frequency Relative Frequency Winter 100 0.1 Spring 300 0.3 Summer 400 0.4 Fall 200 0.2 Total 1000 1.0 (LO2-1) 4. City Frequency Relative Frequency Indianapolis 100 0.05 St. Louis 450 0.225 Chicago 1300 0.65 Milwaukee 150 0.075 (LO2-1) 5. a. A frequency table. Color Frequency Relative Frequency Bright White 130 0.10 Metallic Black 104 0.08 Magnetic lime 325 0.25 Tangerine Orange 455 0.35 Fusion Red 286 0.22 Total 1300 1.00 11. a. 4 2 =16 suggests 5 classes b. 31 25 1.2 5 i    Use interval of 1.5 c. 24 d. f Relative frequency 24 up to 25.5 2 0.125 25.5 up to 27 4 0.250 27 up to 28.5 8 0.500 28.5 up to 30 0 0.000 30 up to 31.5 2 0.125 Total 16 1.000 e. The number of units produced in the past 16 days range between 24 and 31 units. The largest concentration is in the 27 up to 28.5 class (8). (LO2-3) 12. a. 4 2 = 16 < 20 < 32 = 2 5 suggest 5 classes b. 98 51 9.4 5 i    Use interval of 10. c. 50 d. f Relative frequency 50 up to 60 4 0.20 60 up to 70 5 0.25 70 up to 80 6 0.30 80 up to 90 2 0.10 90 up to 100 3 0.15 Total 20 1.00 e. The fewest number is about 50, the highest about 100. The greatest concentration is in classes 60 up to 70 and 70 up to 80. (LO2-3) Visits f 13. a. 0 up to 3 9 3 up to 6 21 6 up to 9 13 9 up to 12 4 12 up to 15 3 15 up to 18 1 Total 51 b. The largest group of shoppers (21) shop at BiLo 3, 4 or 5 times during a month period. Some customers visit the store only 1 time during the month, but others shop as many as 15 times. c. Number of Percent of Visits Total 0 up to 3 17.65 3 up to 6 41.18 6 up to 9 25.49 9 up to 12 7.84 12 up to 15 5.88 15 up to 18 1.96 Total 100.00 (LO2-3)