lOMoARcPSD|34096219
Test Bank Elementary Statistics
14th Edition by Triola
Statistics and Probability
,Triola Elementary Statistics 14e
Chapter 1 Test
M ULTIPLE CHOICE. Choose the one al ternative that best completes the statement or
answers the question.
1) Determine whether the given description corresponds to an experiment or an
observational study. A stock analyst selects a stock from a group of twenty for
investment by choosing the stock with the greatest earnings per share reported for
the last quarter.
A) Observational study B) Experiment
Objective: Exam A
2) Identify which type of sampling is used. The name of each contestant is written on
a separate card, the cards are placed in a bag, and three names are picked from the
bag.
A) Stratified
B) Simple Random
C) Convenience
D) Cluster
E) Systematic
Objective: Exam A
3) Identify which type of sampling is used. To avoid w orking late, a quality control
analyst simply inspects the first 100 items produced in a day.
A) Stratified
B) Simple Random
C) Convenience
D) Systematic
E) Cluster
Objective: Exam A
4) A n education expert is researching teaching methods and wishes to interview teachers
from a particular school
district. She randomly selects ten schools from the district and interviews all of the
teachers at the selected schools. Does this sampling plan result in a random sample?
Simple random sample? Explain.
A) Yes; yes. The sample is random because all teachers have the same chance
of being selected. It is a simple random sample because all samples have
the same chance of being selected.
B) Yes; no. The sample is random because all teachers have the same chance of
being selected. It is not a simple random sample because some samples are not
possible, such as a sample that includes teachers from schools that were not
selected.
C) No; yes. The sample is not random because teachers in small schools are more
likely to be selected than teachers in larger schools. It is a simple random
sample because all samples have the same chance of being selected.
D) No; no. The sample is not random because teachers in small schools are more
likely to be selected than teachers in larger schools. It is not a simple random
sample because some samples are not possible, such as a sample that includes
teachers from schools that were not selected.
Objective: Exam A
5) Identify the type of observational study used. A town obtains current employment
data by polling 10,000 of its citizens this month.
A) Retrospective B) Cross- sectional C) Prospective D)
None of these
Objective: Exam A
1
, lOMoARcPSD|34096219
6) Determine whether the given value is a discrete or continuous variable. People are asked to state
how many times in the last month they visited their family doctor.
A) Continuous B) Discrete
Objective: Exam A
7) Determine which of the four levels of measurement is most appropriate. Students' grades, A, B,
or C, on a test. A) Nominal B) Interval C) Ratio D)
Ordinal
Objective: Exam A
8) A tax auditor selects every 1000th income tax return that is received. Identify which of these
types of sampling is used.
A) Stratified
B) Systematic
C) Cluster
D) Convenience
E) Simple Random
Objective: Exam A
9) Determine whether the given value is a statistic or a parameter. Thirty percent of all dog owners
poop scoop after their dog.
A) Parameter B) Statistic
Objective: Exam A
10)Determine whether the given value is from a discrete or continuous data set. The time it takes a
computer to complete a task.
A) Continuous B) Discrete
Objective: Exam A
11)On a test, 74% of the questions are answered correctly. If 111 questions are correct, how many
questions are on the test?
A) 37 questions B) 150 questions C) 67 questions D) 82 questions
Objective: Exam A
12)Researchers collect data by interviewing athletes who have won Olympic gold medals from 1992 to
2016. Identify the type of study.
A) Retrospective B) Prospective C) Cross- sectional D) None of these
Objective: Exam A
2
, lOMoARcPSD|34096219
13)A psychology student w ishes to investigate differences in political opinions between business majors
and political science majors at her college. She randomly selects 100 students from the 260
business majors and 100 students
from the 180 political science majors. Does this sampling plan result in a random sample? Simple
random sample? Explain.
A) Yes; yes. The sample is random because all students have the same chance of being
selected. It is a simple random sample because all samples of size 200 have the same
chance of being selected.
B) No; yes. The sample is not random because political science majors have a greater chance of
being selected than business majors. It is a simple random sample because all samples of
size 200 have the same chance of being selected.
C) Yes; no. The sample is random because all students have the same chance of being selected. It
is not a simple random sample because some samples are not possible, such as a sample
consisting of 50 business majors and 150 political science majors.
D) No; no. The sample is not random because political science majors have a greater chance of
being selected than business majors. It is not a simple random sample because some samples
are not possible, such as a sample consisting of 50 business majors and 150 political science
majors.
Objective: Exam A
14) Correlation does not imply .
A) significance B) causation C) bias D) linearity
Objective: Exam A
15)There are many potential pitfalls that can cause problems when analyzing data. Which of these
choices are not classified as a potential pitfall?
A) Self- reported data B) Order of survey questions
C) Nonresponse D) M easured data
Objective: Exam A
16)A management survey for a company surveyed 235 employees. 44.7% of the employees surveyed
were females. The number of males would be .
A) 13 B) 130
C) 105 D) Unable to determine
Objective: Exam A
17)What type of data values are quantitative and the number of values is finite or countable?
A) Categorical B) Interval C) Discrete D) Continuous
Objective: Exam A
18)A is the collection of data from every member of the population.
A) placebo B) sample C) census D) statistic
Objective: Exam A
19)A is the complete collection of all measurements or data collected, whereas, a is a
subcollection of members selected from the complete collection.
A) population; sample B) population; parameter
C) sample; census D) sample; population
Objective: Exam A
3
Test Bank Elementary Statistics
14th Edition by Triola
Statistics and Probability
,Triola Elementary Statistics 14e
Chapter 1 Test
M ULTIPLE CHOICE. Choose the one al ternative that best completes the statement or
answers the question.
1) Determine whether the given description corresponds to an experiment or an
observational study. A stock analyst selects a stock from a group of twenty for
investment by choosing the stock with the greatest earnings per share reported for
the last quarter.
A) Observational study B) Experiment
Objective: Exam A
2) Identify which type of sampling is used. The name of each contestant is written on
a separate card, the cards are placed in a bag, and three names are picked from the
bag.
A) Stratified
B) Simple Random
C) Convenience
D) Cluster
E) Systematic
Objective: Exam A
3) Identify which type of sampling is used. To avoid w orking late, a quality control
analyst simply inspects the first 100 items produced in a day.
A) Stratified
B) Simple Random
C) Convenience
D) Systematic
E) Cluster
Objective: Exam A
4) A n education expert is researching teaching methods and wishes to interview teachers
from a particular school
district. She randomly selects ten schools from the district and interviews all of the
teachers at the selected schools. Does this sampling plan result in a random sample?
Simple random sample? Explain.
A) Yes; yes. The sample is random because all teachers have the same chance
of being selected. It is a simple random sample because all samples have
the same chance of being selected.
B) Yes; no. The sample is random because all teachers have the same chance of
being selected. It is not a simple random sample because some samples are not
possible, such as a sample that includes teachers from schools that were not
selected.
C) No; yes. The sample is not random because teachers in small schools are more
likely to be selected than teachers in larger schools. It is a simple random
sample because all samples have the same chance of being selected.
D) No; no. The sample is not random because teachers in small schools are more
likely to be selected than teachers in larger schools. It is not a simple random
sample because some samples are not possible, such as a sample that includes
teachers from schools that were not selected.
Objective: Exam A
5) Identify the type of observational study used. A town obtains current employment
data by polling 10,000 of its citizens this month.
A) Retrospective B) Cross- sectional C) Prospective D)
None of these
Objective: Exam A
1
, lOMoARcPSD|34096219
6) Determine whether the given value is a discrete or continuous variable. People are asked to state
how many times in the last month they visited their family doctor.
A) Continuous B) Discrete
Objective: Exam A
7) Determine which of the four levels of measurement is most appropriate. Students' grades, A, B,
or C, on a test. A) Nominal B) Interval C) Ratio D)
Ordinal
Objective: Exam A
8) A tax auditor selects every 1000th income tax return that is received. Identify which of these
types of sampling is used.
A) Stratified
B) Systematic
C) Cluster
D) Convenience
E) Simple Random
Objective: Exam A
9) Determine whether the given value is a statistic or a parameter. Thirty percent of all dog owners
poop scoop after their dog.
A) Parameter B) Statistic
Objective: Exam A
10)Determine whether the given value is from a discrete or continuous data set. The time it takes a
computer to complete a task.
A) Continuous B) Discrete
Objective: Exam A
11)On a test, 74% of the questions are answered correctly. If 111 questions are correct, how many
questions are on the test?
A) 37 questions B) 150 questions C) 67 questions D) 82 questions
Objective: Exam A
12)Researchers collect data by interviewing athletes who have won Olympic gold medals from 1992 to
2016. Identify the type of study.
A) Retrospective B) Prospective C) Cross- sectional D) None of these
Objective: Exam A
2
, lOMoARcPSD|34096219
13)A psychology student w ishes to investigate differences in political opinions between business majors
and political science majors at her college. She randomly selects 100 students from the 260
business majors and 100 students
from the 180 political science majors. Does this sampling plan result in a random sample? Simple
random sample? Explain.
A) Yes; yes. The sample is random because all students have the same chance of being
selected. It is a simple random sample because all samples of size 200 have the same
chance of being selected.
B) No; yes. The sample is not random because political science majors have a greater chance of
being selected than business majors. It is a simple random sample because all samples of
size 200 have the same chance of being selected.
C) Yes; no. The sample is random because all students have the same chance of being selected. It
is not a simple random sample because some samples are not possible, such as a sample
consisting of 50 business majors and 150 political science majors.
D) No; no. The sample is not random because political science majors have a greater chance of
being selected than business majors. It is not a simple random sample because some samples
are not possible, such as a sample consisting of 50 business majors and 150 political science
majors.
Objective: Exam A
14) Correlation does not imply .
A) significance B) causation C) bias D) linearity
Objective: Exam A
15)There are many potential pitfalls that can cause problems when analyzing data. Which of these
choices are not classified as a potential pitfall?
A) Self- reported data B) Order of survey questions
C) Nonresponse D) M easured data
Objective: Exam A
16)A management survey for a company surveyed 235 employees. 44.7% of the employees surveyed
were females. The number of males would be .
A) 13 B) 130
C) 105 D) Unable to determine
Objective: Exam A
17)What type of data values are quantitative and the number of values is finite or countable?
A) Categorical B) Interval C) Discrete D) Continuous
Objective: Exam A
18)A is the collection of data from every member of the population.
A) placebo B) sample C) census D) statistic
Objective: Exam A
19)A is the complete collection of all measurements or data collected, whereas, a is a
subcollection of members selected from the complete collection.
A) population; sample B) population; parameter
C) sample; census D) sample; population
Objective: Exam A
3
