5) Examine the residuals (get them from Excel) of the regression analysis that you did for #4. a) Explain how you would get the residuals if Excel did not provide them. b) Create a table showing each data point and the residual in Excel. c) Plot the residuals. Show the plot.

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1090

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154

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### Exploring Residuals in Regression Analysis

**5) Examine the residuals (get them from Excel) of the regression analysis that you did for #4.**

- **a)** Explain how you would get the residuals if Excel did not provide them.

- **b)** Create a table showing each data point and the residual in Excel.

- **c)** Plot the residuals. Show the plot.

- **d)** Comment on the plot. What should the residuals look like?

- **e)** What do they look like?

- **f)** What does this mean regarding the predicting power of the regression for this data?
Transcribed Image Text:### Exploring Residuals in Regression Analysis **5) Examine the residuals (get them from Excel) of the regression analysis that you did for #4.** - **a)** Explain how you would get the residuals if Excel did not provide them. - **b)** Create a table showing each data point and the residual in Excel. - **c)** Plot the residuals. Show the plot. - **d)** Comment on the plot. What should the residuals look like? - **e)** What do they look like? - **f)** What does this mean regarding the predicting power of the regression for this data?
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