3 variable plot
Faceting is a valuable technique for looking at several conditional distributions at the same time. If the faceted distributions are laid out in a grid, you can consider the association between a variable and two others, one on the rows of the grid and the other on the columns.
This exercise is part of the course
Exploratory Data Analysis in R
Exercise instructions
common_cyl, which you created to contain only cars with 4, 6, or 8 cylinders, is available in your workspace.
- Using
common_cyl, create a histogram ofhwy_mpg. - Grid-facet the plot rowwise by
ncyland columnwise bysuv. - Add a title to your plot to indicate what variables are being faceted on.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Facet hists using hwy mileage and ncyl
common_cyl %>%
ggplot(aes(x = ___)) +
geom_histogram() +
facet_grid(___ ~ ___) +
ggtitle(___)