There has been a lot of discussion regarding the relationship between Scholastic Aptitude Test (SAT) scores and
Question:
There has been a lot of discussion regarding the relationship between Scholastic Aptitude Test (SAT) scores and test-takers’ family income (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 data collected on 24 students. The entire data set, labeled SAT, can be found on the text website.
a. Estimate three models:
(i) SAT = β0 + β0Income + ,
(ii) SAT = β0 + β0GPA + , and
(iii) SAT = β0 + β0Income + β2GPA + .
b. Use goodness-of-it measures to select the best-fitting model.
c. Predict SAT given the mean value of the explanatory variable(s).
Step by Step Answer:
Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly