Suppose 100 CPA firms are surveyed to determine how many audits they perform over a certain time. The data are summarized using the Minitab stem-and-leaf plot shown in the next column. What can you learn about the number of audits being performed by these firms from this plot?
Stem-and-Leaf Display: Audits
Stem-and-leaf of Audits
|
N = 100
|
Leaf Unit = 1.0
|
|
9
|
1
|
222333333
|
16
|
1
|
4445555
|
26
|
1
|
6666667777
|
35
|
1
|
888899999
|
39
|
2
|
0001
|
44
|
2
|
22333
|
49
|
2
|
55555
|
(9)
|
2
|
677777777
|
42
|
2
|
8888899
|
35
|
3
|
000111
|
29
|
3
|
223333
|
23
|
3
|
44455555
|
15
|
3
|
67777
|
10
|
3
|
889
|
7
|
4
|
0011
|
3
|
4
|
222
|
1. Using the manufacturer database, construct a frequency distribution for the variable Number of Production Workers. What does the frequency distribution reveal about the number of production workers?
2. Using the Consumer Food database, construct a histogram for the variable Annual Food Spending. How is the histogram shaped? Is it high in the middle or high near one or both ends of the data? Is it relatively constant in size across the class (uniform), or does it appear to have no shape? Does it appear to be nearly “normally” distributed?
3. Construct an ogive for the variable Type in the financial database. The 100 companies in this database are each categorized into one of seven types of companies. Construct a pie chart of these types and discuss the output. For example, which type is most prevalent in the database and which is the least?
4. Using the international unemployment database, construct a stem-and-leaf plot for Italy. What does the plot show about unemployment for Italy over the past 40 years? What does the plot fail to show?