THE Test Bank for Elementary Statistics 14th Edition Triola
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Elementary Statistics 14th Edition Triola
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Elementary Statistics 14th Edition Triola
Book
Essentials of Statistics
Triola Elementary Statistics 14e
Chapter 1 Test
MULTIPLE CHOICE. Choose the one alternative 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 ...
triola elementary statistics 14e chapter 1 test mu
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Triola Elementary Statistics 14e
Chapter 1 Test
MULTIPLE CHOICE. Choose the one alternative 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 working 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) An 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
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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
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13) A psychology student wishes 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) Measured 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
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