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Q1) Market model relating rate of return of stock XYZ (denoted RXYZ) to rate of return of a broader index of stock market (denoted RM) is reported as: RXYZ = 4.46 + 0.304RM
Coefficient
Standard Error
4.460
3.0400
0.304
0.3243
Analysis of Variance
Source
DF
Sum of Squares
Regression
?
141.9
Residual
3718.9
Total
24
Which of given is an suitable null hypothesis?
a) H0: beta1 = 0
b) H0: beta1 = beta0
c) H0: beta1 ≠ 0
d) H0: beta1 ≠ beta0
Q2) What can be done to remedy multicollinearity?
a) Use ANOVA instead of Regression.
b) Drop variables which are correlated from the model.
c) Add dummy variables to prevent problem.
d) None of the above.
Q3) You have been given report which presents 2 regression models with different numbers of independent variables. You don't have the data so you can't recalculate regression models. However, you have been asked to find out which model is better. How can you reasonably compare them?
a) Use R-square
b) Use Adjusted R-square
c) Use coefficient of determination
d) You can't compare models with different numbers of independent variables.
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