Coeff StdError t Stat P-value
Intercept - 32.1 35.7 – 0.90 0.3834
Size 12.2 5.9 2.05 0.0394
Cove – 104.3 53.5 – 1.95 0.0715
Size*Cove 17.0 8.5 1.99 0.0661
SizeSq – 0.3 0.2 – 1.28 0.2204
SizeSq*Cove – 0.3 0.3 – 1.13 0.2749
What is the slope for the independent variable Size and is it significant at an alpha of .
05?
12.2, no

12.2, yes
2.05, no
2.05, yes
Question
7
0 / 4
points
True or False: Collinearity is present when there is a high degree of correlation between any of the
independent variables.

Question
8
4 / 4
points
The Variance Inflationary Factor (VIF) measures the

Question
9
0 / 4
points
TABLE 15-3
In Hawaii, condemnation proceedings are under way to enable private citizens to own the
property that their homes are built on. Until recently, only estates were permitted to own land,
and homeowners leased the land from the estate. In order to comply with the new law, a large
Hawaiian estate wants to use regression analysis to estimate the fair market value of the land.
The following model was fit to data collected for n = 20 properties, 10 of which are located near
a cove.
where Y = Sale price of property in thousands of dollars
X1 = Size of property in thousands of square feet
X2 = 1 if property located near cove, 0 if not
Using the data collected for the 20 properties, the following partial output obtained from
Microsoft Excel is shown:

SUMMARY OUTPUT
Regression Statistics
Multiple R 0.985
R Square 0.970
Standard Error 9.5
Observations 20
ANOVA
df SS MS F Signif F
Regression 5 28324 5664 62.2 0.0001
Residual 14 1279 91
Total 19 29063
Coeff StdError t Stat P-value
Intercept - 32.1 35.7 – 0.90 0.3834
Size 12.2 5.9 2.05 0.0594
Cove – 104.3 53.5 – 1.95 0.0715
Size*Cove 17.0 8.5 1.99 0.0461
SizeSq – 0.3 0.2 – 1.28 0.2204
SizeSq*Cove – 0.3 0.3 – 1.13 0.2749
There is a significant intercation between Size and Cove at an alpha of .05.

Question 10
4 / 4
points
Which of the following is
not
an advantage of exponential smoothing?
It enables us to perform one-period ahead forecasting.
It enables us to perform more than one-period ahead forecasting.
It enables us to smooth out seasonal components.
It enables us to smooth out cyclical components.

Question 11
4 / 4
points
The fairly regular fluctuations that occur within each year would be contained in the
_________________ component.

seasonal