ESBE4eAISEsm02 - Chapter 2 Descriptive Statistics: Tabular...

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Chapter 2 Descriptive Statistics: Tabular and Graphical Methods Learning Objectives 1. Learn how to construct and interpret summarization procedures for qualitative data such as : frequency and relative frequency distributions, bar graphs and pie charts. 2. Learn how to construct and interpret tabular summarization procedures for quantitative data such as: frequency and relative frequency distributions, cumulative frequency and cumulative relative frequency distributions. 3. Learn how to construct a dot plot, a histogram, and an ogive as graphical summaries of quantitative data. 4. Learn how the shape of a data distribution is revealed by a histogram. Learn how to recognize when a data distribution is negatively skewed, symmetric, and positively skewed. 5. Be able to use and interpret the exploratory data analysis technique of a stem-and-leaf display. 6. Learn how to construct and interpret cross tabulations and scatter diagrams of bivariate data. 2 - 1 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher.
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Chapter 2 Solutions: 1. Class Frequency Relative Frequency A 60 60/120 = 0.50 B 24 24/120 = 0.20 C 36 36/120 = 0.30 120 1.00 2. a. 1 - (.22 + .18 + .40) = .20 b. .20(200) = 40 c/d. Class Frequency Percent Frequency A .22(200) = 44 22 B .18(200) = 36 18 C .40(200) = 80 40 D .20(200) = 40 20 Total 200 100 3. a. 360° x 58/120 = 174° b. 360° x 42/120 = 126° c. Yes 48% No Opinion 17% No 35% 2 - 2 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher.
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Descriptive Statistics: Tabular and Graphical Methods d. 0 10 20 30 40 50 60 70 Yes No No Opinion Response Frequency 4. a. Qualitative. b. Show Frequency Percent Frequency CSI 18 36% ER 11 22% Friends 15 30% Raymond 6 12% Total: 50 100 c. 0 5 10 15 20 CSI ER Friends Raymond TV Show 2 - 3 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher.
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Chapter 2 CSI 36% ER 22% Raymond 12% Friends 30% d. CSI had the largest viewing audience. Friends was in second place. Williams 16% Brown 14% Davis 12% Johnson 20% Jones 14% Smith 24% d. Most common: Smith, Johnson and Williams 5. a/b. Reason for CEO Frequency Percent Frequency Built 14 54% Hired 4 15% Inherited 8 31% Total 26 100% c. Construct the bar graph 0 5 10 15 Built Hired Inherited Reason Frequency 2 - 4 This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold, copied, or distributed without the prior consent of the publisher.
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Descriptive Statistics: Tabular and Graphical Methods d. 31% or almost one-third of the respondents became the CEO of a family- owned business because they inherited the business. The majority of CEOs of family-owned business became a CEO (54%) because they built the business themselves.
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This note was uploaded on 05/26/2010 for the course ACC 251 taught by Professor Carl during the Winter '09 term at University of Central Arkansas.

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ESBE4eAISEsm02 - Chapter 2 Descriptive Statistics: Tabular...

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