Determine which
level of measurement—
nominal, ordinal, interval, or ratio—is
used in the following examples.
·
The Association of Accountants is conducting a
survey to determine the ranking of the top 100 accounting firms in the world.
·
How many years did it take you to earn your
college degree?
·
On a questionnaire which asks for gender, males
are coded as 1 and females are coded as 2.
·
Respondents are asked to rate a list of
high-tech companies as excellent, good, fair, or poor in terms of
their service delivery.
·
Cereal brands are arranged in an ordered
sequence in which an equal interval exists between each point.
·
LeBron James wears the number 23 on his jersey.
·
The length of time it takes the winner of a
marathon to cross the finish line.
·
Students are asked to rank computer
manufacturers.
·
The brand of charge card used by a customer
·
The pin number used to access your checking
account.
Which sampling
method—simple
random, systematic, stratified, cluster, convenience, judgment, quota, or
snowball—is most
appropriate for the following examples?
·
The unemployment rate is calculated each month
by the U.S. Bureau of Labor Statistics. The survey consists of 50,000 households
in about 2,000 counties and cities in all 50 states.
·
A researcher for Kraft Foods selects five states
randomly, and then selects 10 supermarkets chains within each state to call for
a phone survey as test markets for a new cookie.
·
A new product researcher would like to
investigate the use of virtual teams. After conducting an interview with a
manager, she asks for the names of other managers that use virtual teams.
·
A news reporter asks people on the street their opinion
about the president’s new bill.
·
Jamie select Denver, Colorado; Chicago,
Illinois; and San Diego, California as test markets for a new potato chip line
base on her experience with these markets.
·
A researcher instructs field interviewers to
interview customers of different cell phone companies in a nearby shopping mall
so that they each interview 10 AT&T, 8 T Mobile, 6 Verizon, and 4 owners of
other cell phone providers.
·
The Consumer Price Index represents a sampling
of 90,000 items from 364 categories, chosen from 20,000 retail stores in 85
geographically distributed areas that are chosen to be as similar as possible.
·
A finance professor wants to know how many MBA
students would be willing to take a course in international finance this
summer. She surveys students in the class she is currently teaching.
Which
hypothesis-testing procedure would you use in the following situations?
·
The mean time an American family lives in a
particular single-family dwelling is 11.8 years. A sample of 100 families in
the Sycamore, OK area shows the mean time living in a single family residence
is 12.7 years. Can we conclude that the time people live in Sycamore is
significantly more than the national average?
·
A researcher would like to know if there is a
significant difference in clothing purchases between full-time working women,
part-time working women, and women who are homemakers.
·
Eighty percent of those who play the state
lottery never win more than $100 in one play. A sample of 500 players was drawn
and the mean winning was $125.
·
A drug manufacturing company conducted a survey
of customers. The research question was as follows: Is there a significant
relationship between packaging preference (size of the bottle purchased) and
economic status? There were four packaging sizes: small, medium, large, and
jumbo. Economic status was categorized as follows: lower, middle, and upper. CHI-
·
A company has 24 salespeople. The test must
evaluate whether their product knowledge has improved or remained unchanged
after a training program.
·
A computer company has a brand loyalty rating of
6.8 on a 7 point scale. Is this company’s rating significantly different from
the industry average of 6.4?
·
The manager of an office supply store wanted to
determine which color folders she should discontinue based on low sales. The
colors stocked were black, blue, red, green, and purple.
