ALLIED MAT130 MODULE 1 check your understanding

Determine which of the four levels of measurement (nominal,
ordinal, interval, ratio) is most appropriate. The subjects in which college
students major.
a. Ratio
b. Nominal
c. Ordinal
d. Interval
.
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2. Identify
the type of observational study (cross-sectional, retrospective, prospective).
The Nielsen Media Research Company uses people meters to record the viewing
habits of about 5000 households, and today those meters will be used to
determine the proportion of households tuned to CBS Evening News.
a. Cross-sectional
b. Prospective
c. Retrospective
d. None of the choices
apply
3. Identify
the type of observational study (cross-sectional, retrospective, prospective).
A town obtains current employment data by polling 10,000 of its citizens this
month.
a. Cross-sectional
b. Prospective
c. Retrospective
d. None of the
choices apply
4. Determine
what completes the following definition: A parameter is a numerical measurement
describing some characteristic of a:
a. sample.
b. person.
c. population.
d. statistic.
5. Identify
the type of observational study (cross-sectional, retrospective, prospective).
University of Toronto researchers studied 699 traffic crashes involving drivers
with cell phones (based on data from “Association Between
Cellular-Telephone Calls and Motor Vehicle Collisions,” by Redelmeier and
Tibshirani, New England Journal of Medicine, Vol. 336, No. 7). They found that
cell phone use quadruples the risk of a collision.
a. Cross-sectional
b. Prospective
c. Retrospective
d. None of the
choices apply
6. Determine
which of the four levels of measurement (nominal, ordinal, interval, ratio) is
most appropriate. Survey responses of “good, better, best”.
a. Ratio
b. Nominal
c. Interval
d. Ordinal
7. Identify
which of these types of sampling is used: random, stratified, systematic,
cluster, convenience. In a study of college programs, 820 students are randomly
selected from those majoring in communications, 1463 students are randomly
selected from those majoring in business, and 760 students are randomly
selected from those majoring in history.
a. Convenience
b. Random
c. Systematic
d. Cluster
e. Stratified
8. Identify
whether the sampling plan results in a random sample, simple random sample, or
neither. NBC News polled reactions to the last presidential election by
surveying adults who were approached by a reporter at a location in New York
City.
a. Random sample
b. Simple random
sample
c. Neither
9. Use
common sense to determine whether the given event is impossible; possible, but
very unlikely; or possible and likely. Andre flipped a coin twice and it came
up the same way both times.
a. Impossible
b. Possible, but
very unlikely
c. Possible and
likely
10. Identify
which of these types of sampling is used: random, stratified, systematic,
cluster, convenience. A pollster uses a computer to generate 500 random
numbers, then interviews the voters corresponding to those numbers.
a. Convenience
b. Random
c. Systematic
d. Cluster
e. Stratified
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11. Solve the
problem. Convert 83% to an equivalent decimal.
a. 83.0
b. 8.3
c. 0.83
d. 1.83
e. .0083
12. Solve the
problem. On a test, 95% of the questions are answered correctly. If 57
questions are correct, how many questions are on the test?
a. 167
b. 95
c. 19
d. 60
13. Determine
whether the given value is a statistic or a parameter. The author randomly selected
35 movies and found the amount of money that they grossed from ticket sales.
The average (mean) is $123.7 million.
a. Statistic
b. Parameter
14. Identify
which of these types of sampling is used: random, stratified, systematic,
cluster, convenience. The U.S. Department of Corrections collects data about
returning prisoners by randomly selecting five federal prisons and surveying
all of the prisoners in each of the prisons.
a. Convenience
b. Random
c. Systematic
d. Cluster
e. Stratified
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15. Identify
whether the sampling plan results in a random sample, simple random sample, or
neither. ABC News conducts an election day poll by randomly selecting voting
precincts in New York, then interviewing all voters as they leave those
precincts.
a. Random sample
b. Simple random
sample
c. Neither