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wing exercises require a computer and software 2.43 Xr02-43 The average loss from robbery in the United States in 2009 was $1246 Source U.S Federal Bureau of Investigation). Suppose that

wing exercises require a computer and software. 2.43 Xr02-43 The average loss from robbery in the United States in 2009 was $1,246. (Source U.S. Federal Bureau of Investigation). Suppose that government agency wanted to know whether the type of robbery differs in the years 1995, 2000, 2005, and 2009. A random sample of robbery reports was taken from each of these years and the types recorded using the codes that follow. Determine whether there are differences in the types of robbery over the 16-year span. 1. Street or highway 2. Commercial house Copyright 2014 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. 40 CHAPTER 2 Descriptive statistical methods are used to summarize data sets so that we can extract the relevant information. In this chapter, we presented graphical techniques for nominal data. Bar charts, pie charts, and frequency distributions are employed to summarize single sets of nominal data. Because of the restrictions applied to this type of data, all that we can show is the frequency and proportion of each category. To describe the relationship between two nominal variables, we produce cross-classification tables and bar charts. CHAPTER SUMMARY 3. Gas station 4. Convenience store 5. Residence 6. Bank 7. Other Source: Adapted from the Statistical Abstract of the United States, 2012, Table 321.

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