## Summary Output of Regression Analysis ### Regression Statistics - **Multiple R:** 0.856730669 - **R Square:** 0.733987439 - **Adjusted R Square:** 0.687044045 - **Standard Error:** 2.967605917 - **Observations:** 21 ### ANOVA | Source | df | SS | MS | F | Significance F | |---------------|-----|--------------|--------------|-------------|----------------------| | Regression | 3 | 413.0930237 | 137.6976746 | 15.63558552 | 3.87427E-05 | | Residual | 17 | 149.7136429 | 8.806684879 | | | | Total | 20 | 562.8066667 | | | | ### Coefficients | Predictor | Coefficients | Standard Error | t Stat | P-value | |--------------------|--------------|----------------|-------------|----------------------| | Intercept | 25.41936066 | 4.338034616 | 5.859649107 | 1.89327E-05 | | hp | -0.161091493 | 0.035506341 | -4.536978136| 0.000291759 | | curbwt | -0.000302296 | 0.002323767 | -0.135390557| 0.893893295 | | hp*curbwt | 2.8177E-05 | 9.4596E-06 | 2.978662513 | 0.008429352 | **Explanation of ANOVA Table:** - **Regression**: Represents the variability explained by the model with 3 degrees of freedom. - **Residual**: Represents the variability not explained by the model with 17 degrees of freedom. - **Total**: Sum of squares representing total variability with 20 degrees of freedom. **Coefficients Overview:** - **Intercept**: The estimated value when all predictors are zero. - **hp**: A unit increase in hp results in a decrease in the outcome by approximately 0.161. - **curbwt

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ISBN:9781119256830
Author:Amos Gilat
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Acceleration Time. Suppose the number of seconds required to accelerate to 60 mph depends on both a car’s weight, its horsepower, and an interaction term between the two variables. A partial computer output from a regression analysis using Excel’s Regression tool follows.

 

Interpret the partial regression coefficients and discuss the results of each significance test.

 

## Summary Output of Regression Analysis

### Regression Statistics
- **Multiple R:** 0.856730669
- **R Square:** 0.733987439
- **Adjusted R Square:** 0.687044045
- **Standard Error:** 2.967605917
- **Observations:** 21

### ANOVA

| Source        | df  | SS           | MS           | F           | Significance F       |
|---------------|-----|--------------|--------------|-------------|----------------------|
| Regression    | 3   | 413.0930237  | 137.6976746  | 15.63558552 | 3.87427E-05          |
| Residual      | 17  | 149.7136429  | 8.806684879  |             |                      |
| Total         | 20  | 562.8066667  |              |             |                      |

### Coefficients

| Predictor          | Coefficients | Standard Error | t Stat      | P-value              |
|--------------------|--------------|----------------|-------------|----------------------|
| Intercept          | 25.41936066  | 4.338034616    | 5.859649107 | 1.89327E-05          |
| hp                 | -0.161091493 | 0.035506341    | -4.536978136| 0.000291759          |
| curbwt             | -0.000302296 | 0.002323767    | -0.135390557| 0.893893295          |
| hp*curbwt          | 2.8177E-05   | 9.4596E-06     | 2.978662513 | 0.008429352          |

**Explanation of ANOVA Table:**
- **Regression**: Represents the variability explained by the model with 3 degrees of freedom.
- **Residual**: Represents the variability not explained by the model with 17 degrees of freedom.
- **Total**: Sum of squares representing total variability with 20 degrees of freedom.

**Coefficients Overview:**
- **Intercept**: The estimated value when all predictors are zero.
- **hp**: A unit increase in hp results in a decrease in the outcome by approximately 0.161.
- **curbwt
Transcribed Image Text:## Summary Output of Regression Analysis ### Regression Statistics - **Multiple R:** 0.856730669 - **R Square:** 0.733987439 - **Adjusted R Square:** 0.687044045 - **Standard Error:** 2.967605917 - **Observations:** 21 ### ANOVA | Source | df | SS | MS | F | Significance F | |---------------|-----|--------------|--------------|-------------|----------------------| | Regression | 3 | 413.0930237 | 137.6976746 | 15.63558552 | 3.87427E-05 | | Residual | 17 | 149.7136429 | 8.806684879 | | | | Total | 20 | 562.8066667 | | | | ### Coefficients | Predictor | Coefficients | Standard Error | t Stat | P-value | |--------------------|--------------|----------------|-------------|----------------------| | Intercept | 25.41936066 | 4.338034616 | 5.859649107 | 1.89327E-05 | | hp | -0.161091493 | 0.035506341 | -4.536978136| 0.000291759 | | curbwt | -0.000302296 | 0.002323767 | -0.135390557| 0.893893295 | | hp*curbwt | 2.8177E-05 | 9.4596E-06 | 2.978662513 | 0.008429352 | **Explanation of ANOVA Table:** - **Regression**: Represents the variability explained by the model with 3 degrees of freedom. - **Residual**: Represents the variability not explained by the model with 17 degrees of freedom. - **Total**: Sum of squares representing total variability with 20 degrees of freedom. **Coefficients Overview:** - **Intercept**: The estimated value when all predictors are zero. - **hp**: A unit increase in hp results in a decrease in the outcome by approximately 0.161. - **curbwt
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