What are the possible values for a dummy variable?
a.-1 or 1
b.It depends on the data collected.
c.1 or 2
d.0 or 1
Q. 2 Which of the following conclusions is
correct based on the
Minitab output given below? Use
.
a.The model explains 11.6 of the variability in Math.
b.The predictor Math contributes significantly to the prediction of GPA.
c.The coefficient,
, contributes significantly to the model.
d.The predictor Verbal contributes significantly to the prediction of GPA.
Q. 3
If the impact of collinearity on the accuracy of a slope estimate increases, what happens to the variance inflation factor?
a.It approaches zero.
b.It increases.
c.It remains the same.
d.It decreases.
Q. 4
What is the term used when referring to correlation between independent variables?
a.collinearity
b.residual error
c.extrapolation
d.sequential sums of squares
Q. 5 How much of the variation in the variable Width is explained by the regression equation given below?
a.2.95
b.87.8
c.7
d.7.2
Q. 6 What is the value of test statistic for testing H
0:
versus H
a:
?
a.41.70
b.-0.37
c.5.75
d.6.27
Q. 7 What hypothesis does the F value test in the analysis of variance table given below?
a.H
0:
versus H
a: at leat one
b.H
0:
versus H
a:
c.H
0:
versus H
a:
d.H
0:
versus H
a:
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