case study 12
Case 15.5: Wendell Motors
The central issue of this case is to determine factors that might be significant in determining shipping costs, in particular is whether the shipping took place on a holiday an important factor? Since a holiday or not is a categorical variables, a dummy variables is introduced into the problem.
d1
Holiday No 0
Yes 1
The Excel output for this problem is:
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SUMMARY OUTPUT |
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Regression Statistics |
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Multiple R |
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R Square |
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Adjusted R Square |
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Standard Error |
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Observations |
45 |
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ANOVA |
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df |
SS |
MS |
F |
Significance F |
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Regression |
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Residual |
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Total |
44 |
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Coefficients |
Standard Error |
t Stat |
P-value |
Lower 95% |
Upper 95% |
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Intercept |
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Distance |
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Weight |
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Holiday |
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Students should write their report based on the results of the regression analysis.