Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 2PS
Business actively recruit business student with well-developed higher-order cognitive skills (HOCS) such as problem identification, analytical reasoning, and content integration skills. Researchers conducted a study to see if improvement in students ‘HOCS was related to the students’ GPA.
The researchers conducted a study in which business students were taught using the case study method. Using study method. Using data collected from 300 business students, the following
Where the dependent variables HOCS measured the improvement in higher-order cognitive skills, with 1 being the lowest Improvement in HOCS and 5 being the highest improvement in HOCS.
a. Construct a table of predicted HOCS, using GPA equal to 2.0,2.1,2.2, …,4.0.
b. Plot the values in the table constructed in (a), with GPA on the horizontal axis and predicted HOCS on the vertical axis.
c. Discuss the curvilinear relationship between students’ GPA and their predicted improvement in HOCS.
d. The researchers reported that the model had an
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Students have asked these similar questions
A consumer advocacy group recorded several variables on 140 models of cars.
The resulting information was used to produce two models for predicting miles per gallon in the city (mpg_city), one based on the engine displacement (in cubic inches) and a second one based the power of the engine (in horsepower).
Model 1: mpg vs engine displacement
The regression equation is
mpg_city=33.8 - 0.0622*displacement
S = 3.10179
R-squared = 66.9%
Model 2: mpg vs horsepower
The regression equation is
mpg_city=32.4 - 0.0579*horsepower
S = 3.30296
R-squared = 52.9%
The variable horsepower is better because it has a higher residual standard error (S=3.30296) and a lower R-square (52.9%).
The displacement variable is better because it has a higher R-square (66.9%).
(C) The variable horsepower is better because it has a higher residual standard error (S=3.30296).
when a regression is used as a method of predicting dependent variables from one or more independent variables. How are the independent variables different from each other yet related to the dependent variable?
You are analyzing a dataset with 749 datapoints. You decide to create a linear
regression model with this dataset, using 12 predictor variables. Using this
information, what is the degrees of freedom associated with the sum of squares
regression in your analysis?
Chapter 15 Solutions
Basic Business Statistics, Student Value Edition
Ch. 15 - The following is the quadratic regression equation...Ch. 15 - Business actively recruit business student with...Ch. 15 - A study was conducted on automobile engines to...Ch. 15 - Prob. 4PSCh. 15 - In the production of printed circuit boards,...Ch. 15 - An automotive sales manager wishes to examine the...Ch. 15 - Researchers wanted to investigate the relationship...Ch. 15 - Prob. 8PSCh. 15 - Prob. 9PSCh. 15 - Prob. 10PS
Ch. 15 - Using the data of Problem 15.4 on page 600, stored...Ch. 15 - Using the data of Problem 15.6 on page 601, stored...Ch. 15 - Using the data of Problem 15.6 on page 601 stored...Ch. 15 - If the coefficient of determination between two...Ch. 15 - If the coefficient of determination between two...Ch. 15 - Prob. 16PSCh. 15 - Refer to Problem 14.5 on page 542. Perform a...Ch. 15 - Refer to Problem 14.6 on page 542. Perform a...Ch. 15 - Refer to Problem 14.7 on page 542. Perform a...Ch. 15 - Refer to Problem 14.8 on page 542. Perform a...Ch. 15 - Prob. 21PSCh. 15 - Prob. 22PSCh. 15 - Prob. 23PSCh. 15 - You need to develop a model to predict the asking...Ch. 15 - Accounting Today identified top public accounting...Ch. 15 - How can you evaluate whether collinearity exists...Ch. 15 - Prob. 27PSCh. 15 - Prob. 28PSCh. 15 - A Specialist in baseball analytics has expanded...Ch. 15 - In the production of printed circuit boards,...Ch. 15 - Hemlock Farms is a community located in the Pocono...Ch. 15 - Prob. 32PSCh. 15 - Prob. 33PSCh. 15 - Prob. 34PSCh. 15 - You are a real estate broker who wants to compare...Ch. 15 - You are a real estate broker who wants to compare...Ch. 15 - Financial analysts engage in business valuation to...Ch. 15 - Prob. 38PSCh. 15 - A molding machine that contains different cavities...Ch. 15 - The file Cites contains a sample of 25 cities in...Ch. 15 - In problem 15.32-15.36 you developed multiple...
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