Basic Analysis and Graphing - SAS

Chapter 15 Creating Bubble Plots 397
Additional Examples of the Bubble Plot Platform
Figure 15.11 The Static Bubble Plot Report Window
From Figure 15.11, you draw the following conclusions:
• Higher verbal scores appear to be associated with higher math scores, since the two track very closely in
the bubble plot. This signifies a correlation between verbal and math scores.
• The larger bubbles represent the US states that have a high percentage of individuals taking the SAT test
in 2004. These larger bubbles are all grouped together in the lower left of the graph. This shows that
when a state has a high percentage of individuals taking the test, both the math and verbal scores are low.
Instead of grouping the bubbles primarily by state, group the bubbles primarily by region as follows:
1. From the red triangle menu, select Show Roles.
2. Click on the ID link.
3. Select Region, and click OK.
Region is now the primary ID variable.
4. Click on the ID2 link.
5. Select State, and click OK.
State is now the secondary ID variable.