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Exam 14: Building Multiple Regression Models

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Exam 1: Introduction to Statistics86 Questionsadd course
Exam 2: Charts and Graphs55 Questionsadd course
Exam 3: Descriptive Statistics59 Questionsadd course
Exam 4: Probability76 Questionsadd course
Exam 5: Discrete Distributions81 Questionsadd course
Exam 6: Continuous Distributions83 Questionsadd course
Exam 7: Sampling and Sampling Distributions87 Questionsadd course
Exam 8: Statistical Inference: Estimation for Single Populations82 Questionsadd course
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Exam 11: Analysis of Variance and Design of Experiments90 Questionsadd course
Exam 12: Simple Regression Analysis and Correlation98 Questionsadd course
Exam 13: Multiple Regression Analysis85 Questionsadd course
Exam 14: Building Multiple Regression Models78 Questionsadd course
Exam 15: Time-Series Forecasting and Index Numbers75 Questionsadd course
Exam 16: Analysis of Categorical Data77 Questionsadd course
Exam 17: Nonparametric Statistics76 Questionsadd course
Exam 18: Statistical Quality Control68 Questionsadd course
Exam 19: Decision Analysis79 Questionsadd course

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A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x1)as the independent variables.The multiple regression analysis produced the following Tables. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. For a child in grade 5 (x<sub>1</sub>= 2),the predicted value of y is ____________. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. For a child in grade 5 (x<sub>1</sub>= 2),the predicted value of y is ____________. For a child in grade 5 (x1= 2),the predicted value of y is ____________.

(Multiple Choice)
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Question 41

Abby Kratz,a market specialist at the market research firm of Saez,Sikes,and Spitz,is analyzing household budget data collected by her firm.Abby's dependent variable is weekly household expenditures on groceries (in $'s),and her independent variables are annual household income (in $1,000's)and household neighborhood (0 = suburban,1 = rural).Regression analysis of the data yielded the following table. Abby Kratz,a market specialist at the market research firm of Saez,Sikes,and Spitz,is analyzing household budget data collected by her firm.Abby's dependent variable is weekly household expenditures on groceries (in For a rural household with $90,000 annual income,Abby's model predicts weekly grocery expenditure of ________________.s),and her independent variables are annual household income (in $1,000's)and household neighborhood (0 = suburban,1 = rural).Regression analysis of the data yielded the following table. For a rural household with $90,000 annual income,Abby's model predicts weekly grocery expenditure of ________________. For a rural household with $90,000 annual income,Abby's model predicts weekly grocery expenditure of ________________.

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Question 42

Which of the following iterative search procedures for model-building in a multiple regression analysis reevaluates the contribution of variables previously include in the model after entering a new independent variable?

(Multiple Choice)
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Question 43

A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x1)as the independent variables.The multiple regression analysis produced the following Tables. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. Using \alpha = 0.01 to test the null hypothesis H0: \beta 1 = \beta 2 = 0,the critical F value is ____. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. Using \alpha = 0.01 to test the null hypothesis H0: \beta 1 = \beta 2 = 0,the critical F value is ____. Using α\alpha = 0.01 to test the null hypothesis H0: β\beta 1 = β\beta 2 = 0,the critical F value is ____.

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Question 44

A logarithmic transformation may be applied to both positive and negative numbers.

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Question 45

Suppose a company is interested in understanding the effect of age and gender on the likelihood a customer will purchase a new product.The data analyst intends to run a logistic regression on her data.Which of the following variable(s)will the analyst need to code as 0 or 1 prior to performing the logistic regression analysis?

(Multiple Choice)
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Question 46

An "all possible regressions" search of a data set containing 5 independent variables will produce ______ regressions.

(Multiple Choice)
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Question 47

Abby Kratz,a market specialist at the market research firm of Saez,Sikes,and Spitz,is analyzing household budget data collected by her firm.Abby's dependent variable is weekly household expenditures on groceries (in $'s),and her independent variables are annual household income (in $1,000's)and household neighborhood (0 = suburban,1 = rural).Regression analysis of the data yielded the following table. Abby Kratz,a market specialist at the market research firm of Saez,Sikes,and Spitz,is analyzing household budget data collected by her firm.Abby's dependent variable is weekly household expenditures on groceries (in For a suburban household with $90,000 annual income,Abby's model predicts weekly grocery expenditure of ________________.s),and her independent variables are annual household income (in $1,000's)and household neighborhood (0 = suburban,1 = rural).Regression analysis of the data yielded the following table. For a suburban household with $90,000 annual income,Abby's model predicts weekly grocery expenditure of ________________. For a suburban household with $90,000 annual income,Abby's model predicts weekly grocery expenditure of ________________.

(Multiple Choice)
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Question 48

Alan Bissell,a market analyst for City Sound Online Mart,is analyzing sales from heavy metal song downloads.Alan's dependent variable is annual heavy metal song download sales (in $1,000,000's),and his independent variables are website visitors (in 1,000's)and type of download format requested (0 = MP3,1 = other).Regression analysis of the data yielded the following tables. Alan Bissell,a market analyst for City Sound Online Mart,is analyzing sales from heavy metal song downloads.Alan's dependent variable is annual heavy metal song download sales (in $1,000,000's),and his independent variables are website visitors (in 1,000's)and type of download format requested (0 = MP3,1 = other).Regression analysis of the data yielded the following tables. Alan's model is ________________. Alan's model is ________________.

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Question 49

An "all possible regressions" search of a data set containing 8 independent variables will produce ______ regressions.

(Multiple Choice)
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Question 50

A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x1)as the independent variables.The multiple regression analysis produced the following Tables. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. The regression equation for this analysis is ____________. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. The regression equation for this analysis is ____________. The regression equation for this analysis is ____________.

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Question 51

A multiple regression analysis produced the following tables. A multiple regression analysis produced the following tables. The regression equation for this analysis is ____________. A multiple regression analysis produced the following tables. The regression equation for this analysis is ____________. The regression equation for this analysis is ____________.

(Multiple Choice)
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Question 52

A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x1)as the independent variables.The multiple regression analysis produced the following Tables. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. Using \alpha = 0.05 to test the null hypothesis H0: \beta 2 = 0,the critical t value is ____. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. Using \alpha = 0.05 to test the null hypothesis H0: \beta 2 = 0,the critical t value is ____. Using α\alpha = 0.05 to test the null hypothesis H0: β\beta 2 = 0,the critical t value is ____.

(Multiple Choice)
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Question 53

Alan Bissell,a market analyst for City Sound Online Mart,is analyzing sales from heavy metal song downloads.Alan's dependent variable is annual heavy metal song download sales (in $1,000,000's),and his independent variables are website visitors (in 1,000's)and type of download format requested (0 = MP3,1 = other).Regression analysis of the data yielded the following tables. Alan Bissell,a market analyst for City Sound Online Mart,is analyzing sales from heavy metal song downloads.Alan's dependent variable is annual heavy metal song download sales (in $1,000,000's),and his independent variables are website visitors (in 1,000's)and type of download format requested (0 = MP3,1 = other).Regression analysis of the data yielded the following tables. For the same number of website visitors,what is difference between the predicted sales for MP3 versus 'other' heavy metal song downloads For the same number of website visitors,what is difference between the predicted sales for MP3 versus 'other' heavy metal song downloads

(Multiple Choice)
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Question 54

An "all possible regressions" search of a data set containing 7 independent variables will produce ______ regressions.

(Multiple Choice)
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Question 55

A multiple regression analysis produced the following tables. A multiple regression analysis produced the following tables. Using \alpha = 0.05 to test the null hypothesis H0: \beta 1 = \beta 2 = 0,the critical F value is ____. A multiple regression analysis produced the following tables. Using \alpha = 0.05 to test the null hypothesis H0: \beta 1 = \beta 2 = 0,the critical F value is ____. Using α\alpha = 0.05 to test the null hypothesis H0: β\beta 1 = β\beta 2 = 0,the critical F value is ____.

(Multiple Choice)
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Question 56

A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x1)as the independent variables.The multiple regression analysis produced the following Tables. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. The sample size for this analysis is ____________. A local parent group was concerned with the increasing school cost for families with school aged children.The parent group was interested in understanding the relationship between the The academic grade level for the child and the total costs spent per child per academic year.They Performed a multiple regression analysis using total cost as the dependent variable and academic Year (x<sub>1</sub>)as the independent variables.The multiple regression analysis produced the following Tables. The sample size for this analysis is ____________. The sample size for this analysis is ____________.

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Question 57

The logistic regression model constrains the estimated probabilities to lie between 0 and 100.

(True/False)
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Question 58

Abby Kratz,a market specialist at the market research firm of Saez,Sikes,and Spitz,is analyzing household budget data collected by her firm.Abby's dependent variable is weekly household expenditures on groceries (in $'s),and her independent variables are annual household income (in $1,000's)and household neighborhood (0 = suburban,1 = rural).Regression analysis of the data yielded the following table. Abby Kratz,a market specialist at the market research firm of Saez,Sikes,and Spitz,is analyzing household budget data collected by her firm.Abby's dependent variable is weekly household expenditures on groceries (in For two households,one suburban and one rural,Abby's model predicts ________.s),and her independent variables are annual household income (in $1,000's)and household neighborhood (0 = suburban,1 = rural).Regression analysis of the data yielded the following table. For two households,one suburban and one rural,Abby's model predicts ________. For two households,one suburban and one rural,Abby's model predicts ________.

(Multiple Choice)
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Question 59

A linear regression model cannot be used to explore the possibility that a quadratic relationship may exist between two variables.

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