Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN: 9781305627734
Author: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher: Cengage Learning
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Chapter 2, Problem 26P
The economic downturn in 2008–2009 resulted in the loss of jobs and an increase in delinquent loans for housing. In projecting where the real estate market was headed in the coming year, economists studied the relationship between the jobless rate and the percentage of delinquent loans. The expectation was that if the jobless rate continued to increase, there would also be an increase in the percentage of delinquent loans. The following data show the jobless rate and the delinquent loan percentage for 27 major real estate markets.
Source: The Wall Street Journal, January 27, 2009.
- a. Compute the
correlation coefficient . Is there apositive correlation between the jobless rate and the percentage of delinquent housing loans? What is your interpretation? - b. Show a
scatter diagram of the relationship between the jobless rate and the percentage of delinquent housing loans.
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49…
An entrepreneur who owns and operates two businesses (A and B) would like to analyze
their profitability. They would like your help in the analysis. They give you the annual net
profit (in thousands of $) for each business from 2008-2020.
Table 1: Annual Net Profits for Businesses A and B
Business
Year
Profit
Business
Year
Profit
2008
-50
2008
-10
2009
57
2009
30
2010
71
2010
27
2011
64
2011
22
2012
60
2012
21
2013
50
2013
20
A
2014
41
2014
24
2015
59
2015
24
2016
71
2016
32
2017
71
2017
36
2018
74
2018
37
019
81
20
40
2020
97
2020
49
a. Suppose you want to graph the distribution of profits. Explain why using only one stem-
plot might not be optimal for the analysis.
b. Describe the correct stemplot to use. Generate this stemplot. Explain your steps. What
can you say about the distribution from this stemplot?
c. When are stemplots useful? And why is that?
d. Suppose that instead of having 26 observations you have 200 observations. What graph
should you generate?
e. What other type of…
Chapter 2 Solutions
Essentials of Business Analytics (MindTap Course List)
Ch. 2 - A Wall Street Journal subscriber survey asked 46...Ch. 2 - The following table contains a partial list of...Ch. 2 - Ohio Logistics manages the logistical activities...Ch. 2 - A partial relative frequency distribution is...Ch. 2 - In a recent report, the top five most-visited...Ch. 2 - In a study of how chief executive officers (CEOs)...Ch. 2 - Consumer complaints are frequently reported to the...Ch. 2 - Reports have found that many U.S. adults would...Ch. 2 - Consider the following data: a. Develop a...Ch. 2 - Consider the following frequency distribution....
Ch. 2 - The owner of an automobile repair shop studied the...Ch. 2 - Approximately 1.65 million high school students...Ch. 2 - Consider a sample with data values of 10, 20, 12,...Ch. 2 - Consider a sample with data values of 27, 25, 20,...Ch. 2 - Consider a sample with data values of 53, 55, 70,...Ch. 2 - If an asset declines in value from 5,000 to 3,500...Ch. 2 - Suppose that you initially invested 10,000 in the...Ch. 2 - The average time that Americans commute to work is...Ch. 2 - Suppose that the average waiting time for a...Ch. 2 - According to the National Education Association...Ch. 2 - Return to the waiting times given for the...Ch. 2 - The results of a national survey showed that on...Ch. 2 - Suppose that the national average for the math...Ch. 2 - Five observations taken for two variables follow....Ch. 2 - The scatter chart in the following figure was...Ch. 2 - The economic downturn in 20082009 resulted in the...Ch. 2 - Heavenly Chocolates manufactures and sells quality...
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