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DAT 565 Wk 5 - Apply: Regression Modeling

DAT 565 Wk 5 - Apply: Regression Modeling PLDZ-13518 Free
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DAT 565 Wk 5 - Apply: Regression Modeling

Purpose 

This assignment provides an opportunity to develop, evaluate, and apply bivariate and multivariate linear regression models.

 

Resources: Microsoft Excel®, DAT565_v3_Wk5_Data_File

 

Instructions:

The Excel file for this assignment contains a database with information about the tax assessment value assigned to medical office buildings in a city. The following is a list of the variables in the database:

  •  FloorArea: square feet of floor space
  •  Offices: number of offices in the building
  •  Entrances: number of customer entrances
  •  Age: age of the building (years)
  •  AssessedValue: tax assessment value (thousands of dollars)

 

Use the data to construct a model that predicts the tax assessment value assigned to medical office buildings with specific characteristics.

 

  •  Construct a scatter plot in Excel with FloorArea as the independent variable and AssessmentValue as the dependent variable. Insert the bivariate linear regression equation and r^2 in your graph. Do you observe a linear relationship between the 2 variables?
  •  Use Excel’s Analysis ToolPak to conduct a regression analysis of FloorArea and AssessmentValue. Is FloorArea a significant predictor of AssessmentValue?
  •  Construct a scatter plot in Excel with Age as the independent variable and AssessmentValue as the dependent variable. Insert the bivariate linear regression equation and r^2 in your graph. Do you observe a linear relationship between the 2 variables?
  •  Use Excel’s Analysis ToolPak to conduct a regression analysis of Age and Assessment Value. Is Age a significant predictor of AssessmentValue?

 

Construct a multiple regression model.

  •  Use Excel’s Analysis ToolPak to conduct a regression analysis with AssessmentValue as the dependent variable and FloorArea, Offices, Entrances, and Age as independent variables. What is the overall fit r^2? What is the adjusted r^2?
  •  Which predictors are considered significant if we work with α=0.05? Which predictors can be eliminated?
  •  What is the final model if we only use FloorArea and Offices as predictors?
  •  Suppose our final model is:
  •  AssessedValue = 115.9 + 0.26 x FloorArea + 78.34 x Offices
  •  What wouldbe the assessed value of a medical office building with a floor area of 3500 sq. ft., 2 offices, that was built 15 years ago? Is this assessed value consistent with what appears in the database?

 

Submit your assignment. 

 

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