In the regression model of Exercise 3,
In Exercise 3

a) What is the R2 for this regression? What does it mean?
b) Why is the "Adjusted R Square" in the table different from the "R Square"?

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Dependent variable is: USGross($) R squared = 47.4% R squared (adjusted) = 46.0% s = 46.41 with 120-4 = 116 degrees of freedom Variable Coefficient SE(Coeff) ratio P-value Intercept-22.9898 25.70 0.895 0.3729 Budget($) 1.13442 0.1297 8.75 <0.0001 Stars Run Time -0.403296 0.2513 -1.60 0.1113 24.9724 5.884 4.24 <0.0001