Basic Analysis and Graphing - SAS

Chapter 6 Performing Contingency Analysis 203
Additional Examples of the Contingency Platform
Figure 6.10 Mosaic Plot for the Cheese Data
From the mosaic plot in Figure 6.10, you notice that the distributions do not appear alike. However, it is
challenging to make sense of the mosaic plot across nine levels. A correspondence analysis can help define
relationships in this type of situation.
7. To see the correspondence analysis plot, from the red triangle menu next to Contingency Analysis, select
Correspondence Analysis.
Figure 6.11 Example of a Correspondence Analysis Plot
least liked
neutral
most liked
Figure 6.11 shows the correspondence analysis graphically, with the plot axes labeled c1 and c2. Notice the
following:
• c1 seems to correspond to a general satisfaction level. The cheeses on the c1 axis go from least liked at
the top to most liked at the bottom.
• c2 seems to capture some quality that makes B and D different from A and C.
• Cheese D is the most liked cheese, with responses of 8 and 9.