Graphics with formulas

Formulas can be used to describe graphics in each of the three popular graphics systems: base graphics, lattice graphics, and in ggplot2 with the statisticalModeling package. Most people choose to work in one of the graphics systems. I recommend ggplot2 with the formula interface provided by statisticalModeling.

Make a boxplot of insurance cost broken down by sex in one of the three graphics systems. All can use the same syntax: function(formula, data = AARP).
- In base graphics, the appropriate function is boxplot().
- In lattice graphics, use bwplot() to make the boxplot. As always, you will have to load the lattice package.
- In the formula interface to ggplot2, use gf_boxplot(). The statisticalModeling package (which communicates with ggplot2), has been loaded for you.
Make a scatterplot of Cost versus Age in one of the graphics packages.
- In base graphics: plot().
- In lattice graphics: xyplot().
- For ggplot graphics: gf_point().

Take Hint (-30 XP)

Exercise

Graphics with formulas

Instructions