Short Answer
It has been hypothesized that overall academic success for college freshmen as measured by grade point average (GPA) is a function of IQ scores , hours spent studying each week
, and one's high school average
. Suppose the regression equation is:
. The multiple standard error is 6.313 and R2 = 0.826.
For which independent variable does a unit change have the greatest effect on the GPA?
Correct Answer:

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