Amu Quiz 1- Math 302

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20.0 Points

Question 1 of 20

1.0 Points

If a variable has possible values –2, 6, and 17, then this variable is A. both a
continuous
and a
discrete
variable
B. a
continuous
variable
C. neither a
continuous
nor a discrete
variable
D. a discrete
variable

Answer Key: D
1.0 Points

Question 2 of 20

Which of the following correctly describes the relationship between a sample and a population? A. A population and a
sample are not
related.
B. A sample is a
group of subjects
selected from a
population to be
studied.
C. A sample is a
group of populations
that are subject to
observation.
D. A population is a
group of samples that
may or may not be
included in a study

Answer Key: B
Question 3 of 20

1.0 Points

What is the term for a characteristic or attribute that can assume different values? A.
expo
nent
B.
datu
m
C.
sam
ple
D.
varia
ble

Answer Key: D
Question 4 of 20

1.0 Points

If you classified the fruit in a basket as apple, orange, or banana, this would be an example of which level of measurement?
A.
ordi
nal
B.
ratio
C.
nom
inal
D.
inter
val

Answer Key: C
Question 5 of 20

1.0 Points

The amount of time needed to run the Boston marathon is an example of which type of variable?

A.
contin
uous
B.
discret
e
C.
qualita
tive
D.
none
of the
above

Answer Key: A
1.0 Points

Question 6 of 20

An advertisement for a car states that it is 10% more powerful than its competitor. This is an example of
A.
ambigu
ous
average
s
B.
suspect
sample
s
C.
changin
g the
subject
D.
detache
d
statistic
s

Answer Key: D
Question 7 of 20

1.0 Points

What type of sampling is being employed if the population is divided into economic classes and a sample is chosen from each economic class to be surveyed?

A.
cluster
samplin
g
B.
random
samplin
g
C.
systema
tic
samplin
g
D.
stratifie
d
samplin
g

Answer Key: D
1.0 Points

Question 8 of 20

A pareto chart does NOT have which of the following properties? A. It is a bar
chart
B. The
frequencies are
arranged from
highest to
lowest
C. The
frequencies are
arranged from
lowest to
highest
D. It is used to
represent
categorical data

Answer Key: C
1.0 Points

Question 9 of 20

The total frequency of the data whose ogive is shown below is approximately

A.
12
B.
18
C.
34
D.
90

Answer Key: C
1.0 Points

Question 10 of 20

A scatter plot would be useful for
A. Showing the
relative number of
sales of four different
brands of blank
DVDs
B. Showing the trend
of sales, over time, of
five different brands
of blank DVDs
C. Showing the
relationship between
the sales of blank
CDs and blank DVDs
D. Showing the top
selling brands of
blank DVDs

Answer Key: C
1.0 Points

Question 11 of 20

What kind of relationship between x and y is demonstrated by the scatter plot below?

A. A
positive
linear
relationsh
ip
B. A
negative
linear
relationsh
ip
C. No
linear
relationsh
ip
D. This is
not a
scatter
plot

Answer Key: B
1.0 Points

Question 12 of 20

Which of the following could be a cumulative frequency graph? A.
B.
C.
D.

Answer Key: B

1.0 Points

Question 13 of 20

What type of graph is the figure below?

A. Pareto
chart
B.
pictograp
h
C. ogive
D.
relative
frequency
histogram

Answer Key: A
Question 14 of 20

1.0 Points

CEOSalaries.xls 14 KB
The following data are the base salaries, in thousands of dollars, of 50 chief executive officers for a sample of companies doing business with the state of Connecticut. That is, the first entry in the table below corresponds to a salary of $125,000. A copy of this data set can be found in the Excel Workbook called CEOSalaries.xls. Use these data to answer questions 14 through 17. 125

157
113
127
201
165
145
119
148
158
148
168
117
105
136
136
125
148
108
178
179
191
225...
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