STAT TECH IN BUSINESS & ECON LL\AC
STAT TECH IN BUSINESS & ECON LL\AC
18th Edition
ISBN: 9781264720545
Author: Lind
Publisher: MCG
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Chapter 4, Problem 1SR

(a)

To determine

Find the maximum numbers of employees per store.

Find the minimum numbers of employees per store.

(a)

Expert Solution
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Answer to Problem 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)

To determine

Find the number of stores that employ 91 people.

(b)

Expert Solution
Check Mark

Answer to Problem 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)

To determine

Identify around what values the number of employees per store tends to cluster.

(c)

Expert Solution
Check Mark

Answer to Problem 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 range.

Hence, the values around which the number of employees per store tends to cluster are 88 employees to 97 employees.

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why the answer is 3 and 10?
PS 9 Two films are shown on screen A and screen B at a cinema each evening. The numbers of people viewing the films on 12 consecutive evenings are shown in the back-to-back stem-and-leaf diagram. Screen A (12) Screen B (12) 8 037 34 7 6 4 0 534 74 1645678 92 71689 Key: 116|4 represents 61 viewers for A and 64 viewers for B A second stem-and-leaf diagram (with rows of the same width as the previous diagram) is drawn showing the total number of people viewing films at the cinema on each of these 12 evenings. Find the least and greatest possible number of rows that this second diagram could have. TIP On the evening when 30 people viewed films on screen A, there could have been as few as 37 or as many as 79 people viewing films on screen B.
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STAT TECH IN BUSINESS & ECON LL\AC

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