Homework Answers
The line is touch when x2=1 at y= 3
The line is touch at y=7.5 when x2=0
Therefore the coefficient of dummy variable = 3-7.5 =-4.5
Hence the -4.5 is correct. Because at present value of dummy variable the value is decreased and absence ot increases.
( Hope this will help you and like you. If any difficulty feel free to comment. Thank you)
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Variable
Coefficient
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Intercept
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51.68272
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0.0000
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100.48497
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A regression analysis is performed using data for 36
single-family homes to predict appraised value (in thousands of
dollars) based on land area of the property (in acres), X1i, and
age (in years), X2i, in month i. Use the results below to
complete parts (a) and (b) below.
Variable
Coefficient
Standard Error
t Statistic
p-value
Intercept
392.60372
51.68272
7.60
0.0000
Area, X1
451.43475
100.48497
4.49
0.0001
Age,X2
−2.17162
0.79077
−2.75
0.0097
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You conduct a standard multiple regression (SMR) analysis with two predictors (X1 and X2), which account for 25% of the variability in the criterion (Y). However, the shared variance between X1 and X2 accounts for 0% of the variance in the DV. If both IVs are entered together in a standard multiple regression, the coefficient for X1 will be compared to the coefficient that X1 would produce if X1 was entered in Block 1 of a hierarchical multiple regression (HMR),...
Using the table, create a multiple linear regression model
evaluating factor 1[x1] and factor 2[x2] against the response
y.
Also, calculate the coefficient of determination and complete
the regression ANOVA to determine if the model is valid.
| 26 1.0 1.5 175 160 16.3 4.0 2.0 100 0.5 3.0 1.0 10.5 | 1.0
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