1.
Select Help > Sample Data Library and open Car Poll.jmp.
2.
Select the Chart command from the Graph menu.
3.
Select age and click Statistics.
4.
Select Mean from the drop-down list of statistics.
5.
Select sex and click Categories, X, Levels.
7.
Select marital status and country and click Grouping.
8.
Figure 13.8 Example of a Chart with Two Grouping Variables

Help created on 7/12/2018