TABLE 15-3 In Hawaii, condemnation proceedings are under way to enable private c
ID: 3130553 • Letter: T
Question
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 0.0661
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?
Question 14 options:
12.2, no
12.2, yes
2.05, no
2.05, yes
Save
12.2, no
12.2, yes
2.05, no
2.05, yes
Explanation / Answer
The slope for the independent variable SIZE is 12.2, hence option B is correct.
Since multiple regression equation is Y = Bo + B1 X1 + B2x2 .....
So slopt of X1 (Size) is B1.
From the coeffecient table we can first get the value of B0 (-32.1), next we get the value of B1 (12.2) and so on....
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