Boxplots are one way of graphically orienting information from the summary(variable) command.

> setwd("~/Desktop")
> png("arrests_boxplot.png")
> boxplot(USArrests$Murder,USArrests$Assault,USArrests$Rape, names=c("Murder","Assault","Rape"),main="US Arrests (per capita)")
> dev.off()
null device
          1
The title is US arrests (per capita). The x-axis has murder, assault, and rape. Three boxplots are shown. Murder and rape are both clustered toward the bottom of the page, with values between 0 and 50. Assault has endpoints from about 50 to 340.
A boxplot depicting the Murder, Assault, and Rape columns from the USArrests dataset.

Because specific columns of data were selected, their individual names had to be specified to create the image above. Otherwise, the default names of 1, 2, and 3, would have been used.