STAT TECH IN BUSINESS & ECON AC
STAT TECH IN BUSINESS & ECON AC
18th Edition
ISBN: 9781264731657
Author: Lind
Publisher: MCG
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Chapter 14, Problem 19CE

The administrator of a new paralegal program at Seagate Technical College wants to estimate the grade point average in the new program. He thought that high school GPA, the verbal score on the Scholastic Aptitude Test (SAT), and the mathematics score on the SAT would be good predictors of paralegal GPA. The data on nine students are:

Chapter 14, Problem 19CE, The administrator of a new paralegal program at Seagate Technical College wants to estimate the , example  1

  1. a. Consider the following correlation matrix. Which variable has the strongest correlation with the dependent variable? Some of the correlations among the independent variables are strong. Does this appear to be a problem?

Chapter 14, Problem 19CE, The administrator of a new paralegal program at Seagate Technical College wants to estimate the , example  2

  1. b. Consider the following output. Compute the coefficient of multiple determination.

Chapter 14, Problem 19CE, The administrator of a new paralegal program at Seagate Technical College wants to estimate the , example  3

  1. c. Conduct a global test of hypothesis from the preceding output. Does it appear that any of the regression coefficients are not equal to zero?
  2. d. Conduct a test of hypothesis on each independent variable. Would you consider eliminating the variables “SAT_Verbal” and “SAT_Math”? Let α = .05.
  3. e. The analysis has been rerun without “SAT_Verbal” and “SAT_Math.” See the following output. Compute the coefficient of determination. How much has R2 changed from the previous analysis?

Chapter 14, Problem 19CE, The administrator of a new paralegal program at Seagate Technical College wants to estimate the , example  4

  1. f. Following is a histogram of the residuals. Does the normality assumption for the residuals seem reasonable?

Chapter 14, Problem 19CE, The administrator of a new paralegal program at Seagate Technical College wants to estimate the , example  5

  1. g. Following is a plot of the residuals and the y ^ values. Do you see any violation of the assumptions?

Chapter 14, Problem 19CE, The administrator of a new paralegal program at Seagate Technical College wants to estimate the , example  6

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Chapter 14 Solutions

STAT TECH IN BUSINESS & ECON AC

Ch. 14 - The following regression output was obtained from...Ch. 14 - A study by the American Realtors Association...Ch. 14 - The manager of High Point Sofa and Chair, a large...Ch. 14 - Prob. 10ECh. 14 - Prob. 11ECh. 14 - A real estate developer wishes to study the...Ch. 14 - Prob. 13CECh. 14 - Prob. 14CECh. 14 - Prob. 15CECh. 14 - Prob. 16CECh. 14 - The district manager of Jasons, a large discount...Ch. 14 - Suppose that the sales manager of a large...Ch. 14 - The administrator of a new paralegal program at...Ch. 14 - Prob. 20CECh. 14 - Prob. 21CECh. 14 - A regional planner is studying the demographics of...Ch. 14 - Great Plains Distributors, Inc. sells roofing and...Ch. 14 - Prob. 24CECh. 14 - Prob. 25CECh. 14 - Prob. 26CECh. 14 - Prob. 28CECh. 14 - Prob. 29CECh. 14 - The director of special events for Sun City...Ch. 14 - Prob. 31CECh. 14 - Prob. 32CECh. 14 - Prob. 33DACh. 14 - Prob. 34DACh. 14 - Prob. 35DACh. 14 - Prob. 1PCh. 14 - Quick-print firms in a large downtown business...Ch. 14 - The following ANOVA output is given. a. Compute...Ch. 14 - Prob. 1CCh. 14 - Prob. 2CCh. 14 - Prob. 3CCh. 14 - In a scatter diagram, the dependent variable is...Ch. 14 - What level of measurement is required to compute...Ch. 14 - If there is no correlation between two variables,...Ch. 14 - Which of the following values indicates the...Ch. 14 - Under what conditions will the coefficient of...Ch. 14 - Given the following regression equation, = 7 ...Ch. 14 - Given the following regression equation, = 7 ...Ch. 14 - Given the following regression equation, = 7 ...Ch. 14 - Prob. 1.9PTCh. 14 - In a multiple regression equation, what is the...Ch. 14 - Prob. 1.11PTCh. 14 - Prob. 1.12PTCh. 14 - For a dummy variable, such as gender, how many...Ch. 14 - What is the term given to a table that shows all...Ch. 14 - If there is a linear relationship between the...Ch. 14 - Given the following regression analysis output: a....Ch. 14 - Given the following regression analysis output. a....
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