Box Plot
The box plot of an observation variable is a graphical representation based on its quartiles, as well as its smallest and largest values. It attempts to provide a visual shape of the data distribution.
Problem
Find the box plot of the eruption duration in the data set faithful.
Solution
We apply the boxplot function to produce the box plot of eruptions.
> duration = faithful$eruptions # the eruption durations
> boxplot(duration, horizontal=TRUE) # horizontal box plot
> boxplot(duration, horizontal=TRUE) # horizontal box plot
Answer
The box plot of the eruption duration is:
Exercise
Find the box plot of the eruption waiting periods in faithful.
