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Concept explainers
(a)
Find the maximum numbers of employees per store.
Find the minimum numbers of employees per store.
(a)
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Answer to Problem 1.1SR
The maximum numbers of employees per store is 105 employees.
The minimum numbers of employees per store is 79 employees.
Explanation of Solution
In the dotplot of number of employees for each of 142 Home Depot stores, the horizontal line represents ‘Number of employees’.
From dotplot, it can be observed that, the maximum or largest number of employees for one of the store is 105 employees. Also, the minimum or smallest number of employees for one of the store is 79 employees.
Hence, the maximum numbers of employees per store is 105 employees and the minimum numbers of employees per store is 79 employees.
(b)
Find the number of stores that employ 91 people.
(b)
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Answer to Problem 1.1SR
The number of stores that employ 91 people is 15 stores.
Explanation of Solution
In the dotplot of number of employees, count the number of dots corresponding to 91 employees on the horizontal line. The number of dots corresponding to 91 employees is 15.
Hence, the number of stores that employ 91 people is 15 stores.
(c)
Identify around what values the number of employees per store tends to cluster.
(c)
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Answer to Problem 1.1SR
The values around which the number of employees per store tends to cluster are 88 employees to 97 employees.
Explanation of Solution
From dotplot, it can be observed that, most of the stores have about 88 to 97 employees. The ‘number of employees for each store’ is clustered around the values 88 to 97, because approximately 75% of the stores are covered under this
Hence, the values around which the number of employees per store tends to cluster are 88 employees to 97 employees.
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Chapter 4 Solutions
Loose Leaf for Statistical Techniques in Business and Economics
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