e.
SAT Scores
Gender
Less than 20
20 up to 25
25 and more
Female
37.5%
63.6%
66.7%
Male
62.5%
36.4%
33.3%
Total
100%
100%
100%

PTS:
1
TOP:
Descriptive Statistics
14.For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.xy2761939517411
PTS:
1
TOP:
Descriptive Statistics
15.For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.xy845539212114

PTS:
1
TOP:
Descriptive Statistics
16.Five hundred recent graduates indicated their majors as follows.MajorFrequencyAccounting60Finance100Economics40Management120Marketing80Engineering60Computer Science40Total500a.Construct a relative frequency distribution.b.Construct a percent frequency distribution.
ANS:
a.
b.
Relative
Percent
Major
Frequency
Frequency
Frequency
Accounting
60
0.12
12
Finance
100
0.20
20
Economics
40
0.08
8
Management
120
0.24
24
Marketing
80
0.16
16
Engineering
60
0.12
12
Computer Science
40
0.08
8
Total
500
1.00
100
PTS:
1
TOP:
Descriptive Statistics
17.A sample of the ages of 10 employees of a company is shown below.

20304030503020302040Construct a dot plot for the above data.
ANS:
•
•
•
•
•
•
•
•
•
•
10
20
30
40
50
60
PTS:
1
TOP:
Descriptive Statistics
18.The following data set shows the number of hours of sick leave that some of the employees of Bastien's, Inc. have taken during the first quarter of the year (rounded to the nearest hour).192227242812234711552542362534164549122028292110593948324031a.Develop a frequency distribution for the above data. (Let the width of your classes be 10 units and start your first class as 10 - 19.)b.Develop a relative frequency distribution and a percent frequency distribution for the data.c.Develop a cumulative frequency distribution.d.How many employees have taken less than 40 hours of sick leave?
ANS:
a.
b.
b.
c.
Hours of
Relative
Percent
Cum.
Sick Leave Taken
Freq.
Freq.
Freq.
Freq.
10 - 19
6
0.20
20
6
20 - 29
11
0.37
37
17
30 - 39
5
0.16
16
22
40 - 49
6
0.20
20
28
50 - 59
2
0.07
7
30
d.
22
PTS:
1
TOP:
Descriptive Statistics
19.The sales record of a real estate company for the month of May shows the following house prices (rounded to the nearest $1,000). Values are in thousands of dollars.105554585753060757995a.Develop a frequency distribution and a percent frequency distribution for the house prices. (Use 5 classes and have your first class be 20 - 39.)

b.Develop a cumulative frequency and a cumulative percent frequency distribution for the above data.c.What percentage of the houses sold at a price below $80,000?
ANS:
a.
a.
b.
b.
Cum.
Sales Price
Percent
Cum.
Percent
(In Thousands of Dollars)
Freq.
Freq.
Freq.
Freq.
20 - 39
1
10
1
10
40 - 59
2
20
3
30
60 - 79
4
40
7
70
80 - 99
2
20
9
90
100 - 119
1
10
10
100
c.
70%
PTS:
1
TOP:
Descriptive Statistics