The graph demonstrates that technology sales were higher than the other categories,
but in particular technology sales were much higher than either furniture
or office supplies in the East. The user was easily able to see this because the
Region was singled out as one of the separators by dragging it to the area as a
column.
Tableau is a well designed software package because it goes much further in
extending user capabilities to perform their tasks through the use of pivot table
techniques. The developers also realized that users may want to group the data
into what they consider a meaningful group. Users may then continue analysis by
examining one of the groups further.