EBK STATISTICAL TECHNIQUES IN BUSINESS
17th Edition
ISBN: 9781259924163
Author: Lind
Publisher: MCGRAW HILL BOOK COMPANY
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Chapter 13, Problem 1SR
a.
To determine
Identify the dependent variable and independent variable.
a.
Expert Solution
Answer to Problem 1SR
The dependent variable is the ‘sales revenue’ and the independent variable is the ‘advertising expense’.
Explanation of Solution
Data on the number of times the advertisement was aired and digital camera sales are given.
Independent variable:
The variable that can be used to predict the values of other variable is called an independent variable.
Dependent variable:
The variable that can be predicted by other variables is called a response variable or a dependent variable.
Here, the variable ‘sales revenue’ can be predicted using the variable ‘advertising expense’. Therefore, the dependent variable is the ‘sales revenue’ and the independent variable is the ‘advertising expense’.
b.
To determine
Construct a
b.
Expert Solution
Answer to Problem 1SR
The scatter diagram of the data is represented below:
Explanation of Solution
Calculation:
The scatterplot of the data is as follows:
Software Procedure:
Step-by-step procedure to obtain the scatterplot using Mega Stat software:
- In an EXCEL sheet enter the data values of x and y.
- Go to Add-Ins > Mega Stat >
Correlation/Regression > Scatterplot. - Enter horizontal axis as $A$1:$A$5 and vertical axis as $B$1:$B$5.
- Click on OK.
The scatterplot of the data shows an increasing trend.
c.
To determine
Find the
c.
Expert Solution
Answer to Problem 1SR
Thus, the
Explanation of Solution
Calculation:
Software procedure:
Step-by-step procedure to obtain the correlation matrix using Mega Stat software:
- In an EXCEL sheet enter the data values of x and y.
- Go to Add-Ins > Mega Stat > Correlation/Regression > Correlation matrix.
- Enter Input
Range as $A$1:$b$5. - Click on OK.
Output obtained using Mega Stat is given as follows:
Thus, the correlation coefficient is 0.965.
d.
To determine
Interpret the strength of the correlation coefficient.
d.
Expert Solution
Explanation of Solution
From Part (c), the correlation coefficient is 0.965. Since the correlation coefficient is positive and close to 1, there is a strong
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Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample of n =6 professional basketball players gave the following information.
x
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Find Se. Round your answer to three decimal places.
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Chapter 13 Solutions
EBK STATISTICAL TECHNIQUES IN BUSINESS
Ch. 13 - Prob. 1SRCh. 13 - Prob. 1ECh. 13 - Prob. 2ECh. 13 - Bi-lo Appliance Super-Store has outlets in several...Ch. 13 - Prob. 4ECh. 13 - Prob. 5ECh. 13 - The owner of Maumee Ford-Volvo wants to study the...Ch. 13 - Prob. 2SRCh. 13 - Prob. 7ECh. 13 - Prob. 8E
Ch. 13 - Prob. 9ECh. 13 - Prob. 10ECh. 13 - Prob. 11ECh. 13 - Prob. 12ECh. 13 - Prob. 3SRCh. 13 - Prob. 13ECh. 13 - Prob. 14ECh. 13 - Prob. 15ECh. 13 - Prob. 16ECh. 13 - Prob. 17ECh. 13 - Prob. 18ECh. 13 - Prob. 19ECh. 13 - Prob. 20ECh. 13 - Prob. 4SRCh. 13 - Prob. 21ECh. 13 - Prob. 22ECh. 13 - Prob. 23ECh. 13 - Prob. 24ECh. 13 - Prob. 5SRCh. 13 - Prob. 25ECh. 13 - Prob. 26ECh. 13 - Prob. 27ECh. 13 - Prob. 28ECh. 13 - Prob. 29ECh. 13 - Prob. 30ECh. 13 - Prob. 6SRCh. 13 - Prob. 31ECh. 13 - Prob. 32ECh. 13 - Prob. 33ECh. 13 - Refer to Exercise 16. a. Determine the .95...Ch. 13 - Prob. 35ECh. 13 - Prob. 36ECh. 13 - A regional commuter airline selected a random...Ch. 13 - Prob. 38CECh. 13 - Prob. 39CECh. 13 - Prob. 40CECh. 13 - Prob. 41CECh. 13 - Prob. 42CECh. 13 - Prob. 43CECh. 13 - Prob. 44CECh. 13 - The manufacturer of Cardio Glide exercise...Ch. 13 - Prob. 46CECh. 13 - Prob. 47CECh. 13 - Prob. 48CECh. 13 - Prob. 49CECh. 13 - Mr. William Profit is studying companies going...Ch. 13 - Prob. 51CECh. 13 - Prob. 52CECh. 13 - Prob. 53CECh. 13 - Prob. 54CECh. 13 - A regression analysis relating the current market...Ch. 13 - Prob. 56CECh. 13 - Prob. 57CECh. 13 - A consumer buying cooperative tested the effective...Ch. 13 - Prob. 59CECh. 13 - Prob. 60CECh. 13 - TravelAir.com samples domestic airline flights to...Ch. 13 - The North Valley Real Estate data reports...Ch. 13 - Prob. 64DA
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