There are numerous variables that are believed to be predictors of housing prices, including living area (square feet), number of bedrooms, and number of bathrooms.The data in the Case Study No. 2.xlsx file pertains to a random sample of houses located in a particular geographic area.
- Develop the following simple linear regression models to predict the sale price of a house based upon a 90% level of confidence.Write the regression equation for each model.
- Sale price based upon square feet of living area.
- Sale price based upon number of bedrooms.
- Sale price based upon number of bathrooms.
- Develop the following multiple linear regression models to predict the sale price of a house based upon a 90% level of confidence.Write the regression equation for each model.
- Sale price based upon square feet of living area and number of bedrooms.
- Sale price based upon square feet of living area and number of bathrooms.
- Sale price based upon number of bedrooms and number of bathrooms.
- Sale price based upon square feet of living area, number of bedrooms, and number of bathrooms.
- Discuss the joint statistical significance of each of the preceding simple and multiple linear regression models at a 90% level of confidence and 95% level of confidence.
- Discuss the individual statistical significance of the coefficient for each independent variable for each of the preceding simple and multiple linear regression models at a 90% level of confidence and 95% level of confidence.
- Compare any of the preceding simple and multiple linear regression models that were found to be jointly and individually statistically significant at a 90% level of confidence and select the preferred regression model. Explain your selection using the appropriate regression statistics.
- Interpret the coefficient for each independent variable (or variables) associated with your selected preferred regression model.
- Using the preferred regression model, predict the sale price of a house with the following values for the independent variables: 3,000 square feet of living area, 3 bedrooms, and 2.5 bathrooms.(Hint: You should only use the values for those independent variables that are specifically associated with your selected preferred regression model.)
Prepare a single Microsoft Excel file using a separate worksheet for each question
You will be expected to:
- perform certain calculations discussed in the assigned reading in order to derive an answer for each problem.
- use Microsoft Excel to complete each problem and submit a single Excel spreadsheet that contains a separate worksheet (i.e., separate tab) for each problem.
- have each worksheet be clearly labeled to identify the associated problem.to show all calculations or other work performed to derive your answer(s) for each problem.
- have your spreadsheet be fully functional (i.e., configured to allow the reader to not only see all numerical values but also be able to see the underlying formula associated with each calculated value).
- to label your work in each worksheet to clearly identify the nature of each piece of data or calculated value.
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