Exercise

More on box plots

The purpose of a box plot is to provide a thumbnail sketch of a variable for the purpose of comparing across several categories. So you can, for example, compare the heights of men and women with boxplot(cdc$height ~ cdc$gender).

This notation is new. The ~ operator can be read "versus" or "as a function of". So you're asking R to give you a box plot of heights where the groups are defined by gender.

Instructions

100 XP

Use the ~ notation to box plot the weight of respondents as a function of whether or not they smoke (smoke100).

Take Hint (-30 XP)