Quiz C 1-9
Chapter 1: Data and Decisions – Quiz C Name_________________________
1.1.1 Identify various aspects of studies and experiments and/or classify variables.
1. Consumer Reports National Research Center routinely compares products and
services. A poll of more than 1,800 U.S. residents was conducted shortly after the 2008
holiday season. What they found was that fewer people than in the previous year tipped
their service providers (newspaper carrier, barber, mail carrier, hairdresser, garbage
collector) or the amount that consumers tip for specific services was reduced..
Information was reported on the type of service, whether a tip or gift was given, and the
median total value of the tip. Describe the W’s for the information given.
• Who:
• What:
• When:
• Where:
• How:
• Why:
1.2.1 Identify various aspects of studies and experiments and/or classify variables.
2. List the variables reported in the Consumer Reports Magazine article on tipping. If
the variable is quantitative, give the units. If the variable is categorical, indicate whether
it is nominal or ordinal.
1.2.2 Identify various aspects of studies and experiments and/or classify variables.
3. Businesses in a U.S. city were surveyed about information to provide to prospective
employees after graduating from business school. The table displays some of these data.
List the variables in the data set. Indicate whether each variable is categorical or
quantitative. If the variable is quantitative, give the units. If the variable is categorical,
indicate whether it is nominal or ordinal.
Employment
Category
Require an MBA
Degree?
Prefer Graduates
with Work
Experience?
Median Salary of
New Graduates
Sales No No $35,000
Management Yes Yes $47,000
Accounting No Yes $52,000
Advertising No No $45,000
1.2.3 Identify various aspects of studies and experiments and/or classify variables.
4. For each of the following, indicate whether the data are cross-sectional or time series:
• Dow Jones Index
• Eating habits by age group
• Attitudes toward abortion over past 10 years
• Voting behavior data for a particular neighborhood