Which independent variable has the smallest affect on gpa/Econometrics
It has been hypothesized that overall success for college freshmen as measured by grade point average (GPA) is a function of IQ scores (X1), hours spent studying each week (X2), and one’s high school average (X3). Suppose the regression equation is: ^Y=6.9+0.055 X1 + 0.107 X2 + 0.0853 X3. The multiple standard error is 6.313 and R squared= 0.826.
A. What is the predicted GPA for a student with an IQ of 108, 32 hours of studying per week and a high school average of 82?
B. Assuming other independent variables are held constant, what effect on the GPA will there be if the number of hours spent studying per week increases from 32 to 36?
C. Which independent variable has the smallest affect on GPA?
D. For which independent variable does a unit change have the greatest effect on GPA?
