CHAPTER 4
Summary Statistics
You have already seen many of the statistical functions in R, but in this chapter, you get a more complete list. You also will learn how R calculates and, more important, reports the statistical results. We cover the standard descriptive statistics from a business statistics class. If you have not taken statistics or are a little rusty, I recommend David Moore’s business statistics books. Although it is a toss-up whether to cover graphs or numerical summaries first, we will start with numerical summaries. We will cover measures of central tendency and spread, and the shape of a distribution. For this chapter, and ...
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