This example uses the SAT.jmp sample data table. SAT test scores for students in the 50 U.S. states, plus the District of Columbia, are divided into two areas: verbal and math. You want to find out how the percentage of students taking the SAT tests is related to verbal test scores for 2004.
1. Select Help > Sample Data Library and open SAT.jmp.
2. Select Analyze > Fit Y by X.
3. Select 2004 Verbal and click Y, Response.
4. Select % Taking (2004) and click X, Factor.
5. Click OK.
Figure 5.2 Example of SAT Scores by Percent TakingĀ
You can see that the verbal scores were higher when a smaller percentage of the population took the test.