The grades of 10 students on their first management

9. The grades of 10 students on their first management test are shown below.
94 61 96 66 92
68 75 85 84 78
a. Construct a frequency distribution. Let the first class be 60 - 69.
b. Construct a cumulative frequency distribution.
c. Construct a relative frequency distribution.

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ANS:
a. b. c.
Cumulative Relative
Class Frequency Frequency Frequency
60 - 69 3 3 0.3
70 - 79 2 5 0.2
80 - 89 2 7 0.2
90 - 99 3 10 0.3
Total 10 1.0
10. There are 800 students in the School of Business Administration. There are four majors in the School:
Accounting, Finance, Management, and Marketing. The following shows the number of students in
each major.
Major Number of Students
Accounting 240
Finance 160
Management 320
Marketing 80
Develop a percent frequency distribution and construct a bar chart and a pie chart.

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11. You are given the following data on the ages of employees at a company. Construct a stem-and-leaf
display.
26 32 28 45 58
52 44 36 42 27
41 53 55 48 32
42 44 40 36 37
ANS:
2 | 6 7 8
3 | 2 2 6 6 7
4 | 0 1 2 2 4 4 5 8
5 | 2 3 5 8
12. Construct a stem-and-leaf display for the following data.
12 52 51 37 47 40 38 26 57 31
49 43 45 19 36 32 44 48 22 18
ANS:
1 | 2 8 9
2 | 2 6
3 | 1 2 6 7 8
4 | 0 3 4 5 7 8 9
5 | 1 2 7
13. The SAT scores of a sample of business school students and their genders are shown below.
SAT Scores
Gender Less than 20 20 up to 25 25 and more Total
Female 24 168 48 240
Male 40 96 24 160
Total 64 264 72 400
a. How many students scored less than 20?
b. How many students were female?
c. Of the male students, how many scored 25 or more?
d. Compute row percentages and comment on any relationship that may exist between SAT

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scores and gender of the individuals.
e. Compute column percentages.
ANS:
a. 64
b. 240
c. 24
d. SAT Scores
Gender Less than 20 20 up to 25 25 and more Total
Female 10% 70% 20% 100%
Male 25% 60% 15% 100%