Examen
Test Bank For Elementary Statistics, 4th Edition by William Navidi, Barry Monk Chapter 1-15
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Test Bank For Elementary Statistics, 4th Edition by William Navidi, Barry Monk Chapter 1-15
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ExamName___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)
Is the following variable at the interval or the ratio level of measurement?
The price of a loaf of bread
1)
A)
Interval
B)
Ratio
2)
In an experiment, subjects are put into two categories according to sex, and then each
subject is randomly assigned a treatment . This is an example of...
2)
A)
observational studies
B)
gender bias
C)
confounding
D)
randomized blocking
3)
Determine which of the following describes qualitative data.
i). the volume of a shipping container, in gallons
ii). the name of the material from which the container is made
iii). the shape of the container
3)
A)
i, ii, and iii
B)
i and iii only
C)
ii and iii only
D)
i and ii only
4)
A college basketball team held a promotion at one of its games in which every twentieth
person who entered the arena won a free basketball. What kind of sample do the winners
represent?
4)
A)
Systematic
B)
Voluntary response
C)
Stratified
5)
Which one of the following data are discrete?
5)
A)
the average preseason ranking of the University of Connecticut's women's
basketball team over the past 10 years
B)
the height of the tallest player on Duke University's men's basketball team
C)
the pre-season ranking of Duke University's men's basketball team
D)
the average height of players on the University of Connecticut's women's basketball
team
6)
In a ________ experiment, subjects do not decide for themselves which treatment they
will get.
6)
A)
double-blind
B)
observational
C)
randomized
D)
prospective
7)
You ask your friends who they plan to vote for in the next congressional election. Based
on their responses, you conclude that the candidate you favor cannot lose!
This is most likely an example of ...
7)
A)
voluntary response bias
B)
self-interest bias
C)
sampling bias
D)
randomized sampling
1 8)
A study in which the assignment to treatment groups is not made by the investigator is
called ________.
8)
A)
double-blind
B)
prospective
C)
randomized
D)
observational
9)
Determine which of the following describes qualitative data.
i). the make of the car with license plate number VNS-862
ii). the license plate number VNS-862
iii). the number of vehicles whose license plate number begins with "VNS"
9)
A)
i and ii only
B)
iii only
C)
neither i, nor ii, nor iii
D)
i only
10)
Which one of the following data are discrete?
10)
A)
the number of crew members on the boat
B)
the latitude and longitude of a boat at sea
C)
the speed of the boat's propeller, in revolutions per minute
D)
the latitude and longitude of the boat's port of departure
11)
Determine which of the following describes ordinal data.
i. In the horse race, Betty's Girl won, Mr. Ed placed, and Wabash showed.
ii. In the horse race, I bet on Betty's Girl to win, Mr. Ed to place, and Wabash to
show.
11)
A)
ii only
B)
neither i nor ii
C)
both i and ii
D)
i only
12)
Determine which of the following describes quantitative data.
i). the name of a chemical sample
ii). the mass of a chemical sample
iii). the color of a chemical sample
12)
A)
i and ii only
B)
i, ii, and iii
C)
i only
D)
ii only
13)
A medical researcher wants to determine whether exercising can lower blood pressure.
At a health fair, he measures the blood pressure of 100 individuals and interviews them
about their exercise habits. He divides the individuals into two categories: those whose
typical level of exercise is low, and those whose level of exercise is high. Is this a
randomized experiment or an observational study?
13)
A)
Randomized experiment
B)
Observational study
14)
Is the following variable at the interval or the ratio level of measurement?
The weight in pounds of a sack of potatoes
14)
A)
Interval
B)
Ratio
15)
Is the following variable at the interval or the ratio level of measurement?
The year of your birth
15)
A)
Interval
B)
Ratio
2 16)
A middle school student passes out leaflets to the adults at a school function. The leaflets
ask the recipient to indicate whether they believe in anthropogenic global warming. The
bottom of the leaflet indicates that the completed leaflet should be returned to the
student. Identify the kind of sample that is being used.
16)
A)
stratified sample
B)
sample of convenience
C)
systematic sample
D)
cluster sample
17)
Determine which of the following describes ordinal data.
i. My best friends are Georgia, Amithaba, and Raphael.
ii. My favorite numbers are 2, 7 and 13.
17)
A)
neither i nor ii
B)
ii only
C)
both i and ii
D)
i only
18)
Determine which of the following describes nominal data.
i. Michaelangelo's sells small, medium, large, and jumbo pizzas.
ii. Michaelangelo's most-requested toppings are pepperoni, black olives, and
mushrooms.
18)
A)
both i and ii
B)
i only
C)
ii only
D)
neither i nor ii
19)
People are reluctant to admit to behavior that may reflect negatively on them. This can
lead to ...
19)
A)
social acceptability bias
B)
hurt feelings
C)
sampling bias
D)
voluntary response bias
20)
A pollster randomly samples 145 Democrats, 154 Republicans and 19 Independents (all
registered voters) in Metro City and asks each poll participant which mayoral candidate
he or she prefers. Identify the kind of sample that the pollster is using.
20)
A)
sample of convenience
B)
voluntary response sample
C)
stratified sample
D)
cluster sample
21)
A public health researcher is designing a study of the effect of diet on heart disease. The
researcher knows that the diets of men and women tend to differ and that men are more
susceptible to heart disease. To be sure that both men and women are well represented,
the study comprises a simple random sample of 100 men and another simple random
sample of 100 women. What kind of sample do these 200 people represent?
21)
A)
Stratified
B)
Voluntary response
C)
Cluster
D)
Systematic
22)
Choose the answer below that best completes the following statement.
A _____________ is a number that describes a sample.
22)
A)
population
B)
statistic
C)
measurement
D)
parameter
3 23)
Determine which of the following describes quantitative data.
i). the length of an object in feet
ii). the speed of an object in meters per second
iii). the number of objects that are blue
23)
A)
i only
B)
iii only
C)
i and ii only
D)
i, ii, and iii
24)
A radio talk show host invites listeners to send an email to express their opinions on an
upcoming election. More than 10,000 emails are received. What kind of sample is this?
24)
A)
Stratified
B)
Voluntary response
C)
Systematic
D)
Cluster
25)
Which of the following is the best description of a double-blind experiment?
25)
A)
an experiment in which neither the investigators nor the subjects know how the
treatments have been assigned
B)
an experiment in which both the investigators and the subjects are hidden from the
others' views
C)
an experiment in which the subjects are blindfolded so they cannot see which
treatment is applied to them
D)
an experiment in which neither the investigators nor the subjects know the others'
names
26)
A pollster asks a group of six voters about their political affiliation (Republican,
Democrat, or Independent), their age, and whether they voted in the last election. The
results are shown in the following table.
Voter
Political
Affilation
Age
Voted in Last
Election?
1
Republican
34
Yes
2
Democrat
56
Yes
3
Democrat
21
No
4
Independent
28
Yes
5
Republican
61
No
6
Independent
46
Yes
What are the data for individual #3?
26)
A)
Political affiliation, age, voted in last election
B)
Democrat, 21
C)
Political affiliation
D)
Democrat, 21, no
27)
When rolling two six-sided dice, your total roll ranges from 2 (double ones) to 12
(double sixes).Characterize the nature of the roll total.
27)
A)
qualitative and discrete
B)
qualitative and continuous
C)
quantitative and continuous
D)
quantitative and discrete
4
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