5. Consider the partially completed ANOVA summary table below. Source df MS Regression 1 700 Residual Total 8 1100 а. Complete the remaining entries in the table. b. Calculate the sample coefficient of determination. C. Using a=0.05, is there a significant relationship between two variables?

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**Question 5: ANOVA Summary Table**

Consider the partially completed ANOVA summary table below.

| Source      | df | SS  | MS   |
|-------------|----|-----|------|
| Regression  | 1  | 700 |      |
| Residual    | —  | —   | —    |
| Total       | 8  | 1100|      |

a. Complete the remaining entries in the table.  
b. Calculate the sample coefficient of determination.  
c. Using α = 0.05, is there a significant relationship between two variables?

**Table Explanation:**

- **df (Degrees of Freedom):** A measure used in statistics that describes the number of independent values or quantities which can be assigned to a statistical distribution.
  
- **SS (Sum of Squares):** A measure that quantifies the total variation in a data set.

- **MS (Mean Square):** This is calculated by dividing the SS by its respective df. It is used to evaluate the variability of a set of data.

**Tasks:**

- **Part a:** Fill in the missing degrees of freedom for the Residual source and calculate the MS for Regression and Residual.

- **Part b:** The sample coefficient of determination (R²) can be calculated using the formula: 
  \[
  R^2 = \frac{SS_{Regression}}{SS_{Total}}
  \]

- **Part c:** Determine if the relationship is significant using a significance level of α = 0.05. This can involve calculating the F-statistic and comparing it against a critical value from the F-distribution table.
Transcribed Image Text:**Question 5: ANOVA Summary Table** Consider the partially completed ANOVA summary table below. | Source | df | SS | MS | |-------------|----|-----|------| | Regression | 1 | 700 | | | Residual | — | — | — | | Total | 8 | 1100| | a. Complete the remaining entries in the table. b. Calculate the sample coefficient of determination. c. Using α = 0.05, is there a significant relationship between two variables? **Table Explanation:** - **df (Degrees of Freedom):** A measure used in statistics that describes the number of independent values or quantities which can be assigned to a statistical distribution. - **SS (Sum of Squares):** A measure that quantifies the total variation in a data set. - **MS (Mean Square):** This is calculated by dividing the SS by its respective df. It is used to evaluate the variability of a set of data. **Tasks:** - **Part a:** Fill in the missing degrees of freedom for the Residual source and calculate the MS for Regression and Residual. - **Part b:** The sample coefficient of determination (R²) can be calculated using the formula: \[ R^2 = \frac{SS_{Regression}}{SS_{Total}} \] - **Part c:** Determine if the relationship is significant using a significance level of α = 0.05. This can involve calculating the F-statistic and comparing it against a critical value from the F-distribution table.
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