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Chapter 2: Q25E (page 84)

Refer to the Academy of Management Journal(Aug. 2008) study of corporateacquisitions from 1980 to 2000, Exercise 2.12 (p. 74). Thedata file includes the number of firms with at least one

acquisition each year.

a.Construct either a dot plot or a stem-and-leaf display

for the annual number of firms with at least one

acquisition.

b.On the graph, part a, highlight (or circle) the values for

the years 1996鈥�2000. Do you detect a pattern? If so,

what conclusion can you draw from the data?

Year

Number of firms sampled

Number with acquisitions

1980

1963

18

1990

2197

350

2000

2778

748

Total

6938

1116

Short Answer

Expert verified

a. The key of the stem and leaf display are defined as 28.

b. The value of the year 1996 to 2000 is 28. Therefore years 1996- 2000 had the highest number of firms with at least one acquisition.

Step by step solution

01

Given information

Given that the data file includes the number of firms with at least one acquisitions. The study of corporate acquisitions from to define in tabulation form.

02

Construct dot plot or stem and leaf display

a. The stem and leaf display will be given by

Number of firms sampled

Stem

Leaf

1963

19

19

2197

21

97

2778

27

78

The stem and leaf display with one number(18) with acquisitions. Then the key is taken from the stem and leaf display to given by 2|8=28.

03

Highlight the value of year 1996 to 2000. And also detect pattern and conclusions

b. The value of the year 1996 to 2000 is 28. The detected pattern follows the stem and leaf display graph and this interval of the year the key is defined 28.

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