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Active Learning Lecture Slides For use with Classroom Response Systems Chapter 2: Descriptive Statistics Elementary Statistics: Picturing the World Fourth Edition by Larson and Farber Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 4- 1 Find the class width: A. 3 Class 1– 5 Frequency, f 21 6 – 10 11 – 15 16 – 20 16 28 13 B. 4 C. 5 D. 19 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 2 Find the class width: A. 3 Class 1– 5 Frequency, f 21 6 – 10 11 – 15 16 – 20 16 28 13 B. 4 C. 5 D. 19 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 3 Estimate the frequency of the class with the greatest frequency. A. 28 B. 21 C. 58 D. 53 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 4 Estimate the frequency of the class with the greatest frequency. A. 28 B. 21 C. 58 D. 53 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 5 What is the maximum data entry? Key: 3 | 8 = 38 A. 96 B. 38 C. 9 D. 41 3 4 5 6 7 8 9 8 0 1 3 0 2 1 9 2 1 3 0 2 1 7 4 3 1 3 4 8 8 1 4 5 9 9 2 4 7 8 8 8 8 9 7 7 8 9 9 6 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 6 What is the maximum data entry? Key: 3 | 8 = 38 A. 96 B. 38 C. 9 D. 41 3 4 5 6 7 8 9 8 0 1 3 0 2 1 9 2 1 3 0 2 1 7 4 3 1 3 4 8 8 1 4 5 9 9 2 4 7 8 8 8 8 9 7 7 8 9 9 6 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 7 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the mean. A. 78.5 B. 79 C. 474 D. 78 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 8 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the mean. A. 78.5 B. 79 C. 474 D. 78 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 9 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the median. A. 78.5 B. 79 C. 79.5 D. 78 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 10 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the median. A. 78.5 B. 79 C. 79.5 D. 78 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 11 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the mode. A. 78.5 B. 79 C. 79.5 D. 78 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 12 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the mode. A. 78.5 B. 79 C. 79.5 D. 78 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 13 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the standard deviation. A. 2.2 B. 6 C. 2 D. 4.8 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 14 The heights (in inches) of a sample of basketball players are shown: 76 79 81 78 82 78 Find the standard deviation. A. 2.2 B. 6 C. 2 D. 4.8 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 15 The mean annual automobile insurance premium is $950, with a standard deviation of $175. The data set has a bell-shaped distribution. Estimate the percent of premiums that are between $600 and $1300. A. 68% B. 75% C. 95% D. 99.7% Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 16 The mean annual automobile insurance premium is $950, with a standard deviation of $175. The data set has a bell-shaped distribution. Estimate the percent of premiums that are between $600 and $1300. A. 68% B. 75% C. 95% D. 99.7% Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 17 Use the box-and-whisker plot to identify the first quartile. 10 | 18 | | | | 24 26 | | | | 30 | | 10 12 14 16 18 20 22 24 26 28 30 A. 10 B. 18 C. 24 D. 26 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 18 Use the box-and-whisker plot to identify the first quartile. 10 | 18 | | | | 24 26 | | | | 30 | | 10 12 14 16 18 20 22 24 26 28 30 A. 10 B. 18 C. 24 D. 26 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 19 The mean annual automobile insurance premium is $950, with a standard deviation of $175. Find the z-score that corresponds to a premium of $1250. A. 1.13 B. –1.13 C. 1.71 D. –1.71 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 20 The mean annual automobile insurance premium is $950, with a standard deviation of $175. Find the z-score that corresponds to a premium of $1250. A. 1.13 B. –1.13 C. 1.71 D. –1.71 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 2- 21