(5/5)

Hire Me
(4/5)

Hire Me
(/5)

Hire Me
(5/5)

Hire Me
(5/5)

Fit a multiple linear regression model with total as the response variable and predictor variables of expending, ratio, salary, and takers.

INSTRUCTIONS TO CANDIDATES

Lab Objectives: By the end of this lab, you should be able to:

. Fit a multiple linear regression model using R.
. Conduct a global test of hypothesis for a multiple linear regression model.
. Interpret the value of 2 for a multiple linear regression model.
. Determine if a reduced (nested) model is adequate.
. Create and interpret interaction plots for two categorical predictor variables.
. Determine if an interaction effect and the corresponding main effects are appropriate for the regression model.

Testing the Utility of a Model

You should already have the faraway package installed on your computer from last week’s lab.
However, if you do not, you will need to install this package to your computer. Once you have done this, load the faraway package, then load the sat data set that is included. View the help file to learn more about the variables in this data set. If you do not remember how to do anything of these things, review Lab 4.

1. (1 point) Fit a multiple linear regression model with total as the response variable and predictor variables of expending, ratio, salary, and takers. Entitle this model regress complete. What is the code to do this?

2. (2 points) Compute the quantities SS, and SSE for the model. Paste your code and numeric answers.

3. (5 points) Consider the hypothesis test H0: ßexpencz = ßratio = ßsaiary = ßtakers = O VS. Ha at least one ß * O

a. What is the numerical value of the F test statistic for this test? Round your answer to  two decimal places.

b. What are the numerator and denominator degrees of freedom for this F statistic?

c. What is the p-value for this test? Include your R code.

d. What are the decision and conclusion (in context) for this hypothesis test?

4. (2 points) You should have found an R2 value of 0.8246. Interpret this value in the context of the problem.

5. (1 point) Explain why the value of the Adjusted R2 is smaller than the value of the
Multiple R2.

(5/5)

Related Questions

. The fundamental operations of create, read, update, and delete (CRUD) in either Python or Java

CS 340 Milestone One Guidelines and Rubric  Overview: For this assignment, you will implement the fundamental operations of create, read, update,

. Develop a program to emulate a purchase transaction at a retail store. This  program will have two classes, a LineItem class and a Transaction class

Retail Transaction Programming Project  Project Requirements:  Develop a program to emulate a purchase transaction at a retail store. This

. The following program contains five errors. Identify the errors and fix them

7COM1028   Secure Systems Programming   Referral Coursework: Secure

. Accepts the following from a user: Item Name Item Quantity Item Price Allows the user to create a file to store the sales receipt contents

Create a GUI program that:Accepts the following from a user:Item NameItem QuantityItem PriceAllows the user to create a file to store the sales receip

. The final project will encompass developing a web service using a software stack and implementing an industry-standard interface. Regardless of whether you choose to pursue application development goals as a pure developer or as a software engineer

CS 340 Final Project Guidelines and Rubric  Overview The final project will encompass developing a web service using a software stack and impleme

Get Free Quote!

406 Experts Online