John Verzani's webpage

This directory contains data files accompanying the text Introduction to the Practice of Statistics by Moore, McCabe and Craig. They are taken from the publisher's website http://bcs.whfreeman.com/.

To use these within R is fairly straightforward. The files are read in with the command read.table. For example, the file ex10_028.txt can be read in with



f <- "http://www.math.csi.cuny.edu/verzani/classes/MTH214/R/Data/ex10_028.txt" df <- read.table("f", header=TRUE) dim(df)

[1] 31  2

names(df)

[1] "loc"     "lvoplus"

mean(dflvoplus)

[1] 6.741839

The return value of read.table is a data frame, even for univariate data, so variable names are referenced as above or an alternative manner.