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Complete Business Statistics, 7th edition (The Mcgraw-Hill by Amir Aczel, Jayavel Sounderpandian

By Amir Aczel, Jayavel Sounderpandian

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Additional resources for Complete Business Statistics, 7th edition (The Mcgraw-Hill Irwin Series)

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HISTOGRAMS A histogram can be drawn either from raw data or from grouped data, so the workbook contains one sheet for each case. Figure 1–23 shows the template that used raw data. After entering the data in the shaded area in column Q, select appropriate values for the start, interval width, and end values for the histogram in Aczel−Sounderpandian: Complete Business Statistics, Seventh Edition 1. xls; Sheet: from Raw Data] A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 C D G H I J K L Virtual Reality Histogram from Raw Data Interval <=10 (10, 20] (20, 30] (30, 40] (40, 50] (50, 60] (60, 70] >70 Freq.

82. Reprinted by permission. 2 1200 1410 MAR. SEPT. MAR. MAR. 22–28 Source: Adapted from “Economic Focus,” The Economist, March 3, 2007, p. 82. merely descriptive approach to data analysis and an argument for statistical inference. Statistical tests tend to be more objective than our eyes and are less prone to deception as long as our assumptions (random sampling and other assumptions) hold. As we will see, statistical inference gives us tools that allow us to objectively evaluate what we see in the data.

19 Adapted from a chart in R. Farzad, “Activist Investors Not Welcome,” BusinessWeek, April 9, 2007, p. 36. 43 46 Aczel−Sounderpandian: Complete Business Statistics, Seventh Edition 1. Introduction and Descriptive Statistics 44 © The McGraw−Hill Companies, 2009 Text Chapter 1 1–75. –5 Refer to the box plot below to answer the questions. 0 5 10 15 20 25 1. What is the interquartile range for this data set? 2. What can you say about the skewness of this data set? 3. 5 is more likely to be (choose one) a.

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