Mosaic plots allow you to graphically compare several variables at once.
Choose Plots→Interactive→Mosaic from the menu bar of the Console window. The following window will appear.
Choose the desired file from the pull down menu. Select the two variables to compare and add them to the vars space by clicking on the right arrow. The first variable listed will be the x-direction and the second will be the y-direction. Click Run.
Deducer: A GUI for R