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R Data Analysis Cookbook - Second Edition by Kuntal Ganguly

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Getting ready

If you have not already done so, download the data files for this chapter, ensure that the auto-mpg.csv file is available in your R environment's working directory, and run the following commands:

> auto <- read.csv("auto-mpg.csv")> cylinders <- factor(cylinders, levels = c(3,4,5,6,8), labels = c("3cyl", "4cyl", "5cyl", "6cyl", "8cyl"))> attach(auto)

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