There has been a lot of discussion regarding the relationship between Scholastic Aptitude Test (SAT) scores and test-takers’ family income (The New York Times, August 27, 2009). It is generally believed that the wealthier a student’s family, the higher the SAT score. Another commonly used predictor for SAT scores is the student’s grade point average (GPA). Consider the following portion of data collected on 24 students. SAT Income GPA 1,651 47,000 2.79 1,581 34,000 2.97 ⋮ ⋮ ⋮ 1,940 113,000 3.96