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Sample Files
debate.sav. This is a hypothetical data file that concerns paired responses to a survey from
attendees of a political debate before and after the debate. Each case corresponds to a separate
respondent.
debate_aggregate.sav. This is a hypothetical data file that aggregates the responses in
debate.sav. Each case corresponds to a cross-classification of preference before and after
the debate.
demo.sav. This is a hypothetical data file that concerns a purchased customer database, for
the purpose of mailing monthly offers. Whether or not the customer responded to the offer
is recorded, along with various demographic information.
demo_cs_1.sav. This is a hypothetical data file that concerns the first step of a company’s
efforts to compile a database of survey information. Each case corresponds to a different city,
and the region, province, district, and city identification are recorded.
demo_cs_2.sav. This is a hypothetical data file that concerns the second step of a company’s
efforts to compile a database of survey information. Each case corresponds to a different
household unit from cities selected in the first step, and the region, province, district, city,
subdivision, and unit identification are recorded. The sampling information from the first
two stages of the design is also included.
demo_cs.sav. This is a hypothetical data file that contains survey information collected using a
complex sampling design. Each case corresponds to a different household unit, and various
demographic and sampling information is recorded.
dmdata.sav. This is a hypothetical data file that contains demographic and purchasing
information for a direct marketing company. dmdata2.sav contains information for a subset of
contacts that received a test mailing, and dmdata3.sav contains information on the remaining
contacts who did not receive the test mailing.
dietstudy.sav. This hypothetical data file contains the results of a study of the “Stillman diet”
(Rickman, Mitchell, Dingman, and Dalen, 1974). Each case corresponds to a separate
subject and records his or her pre- and post-diet weights in pounds and triglyceride levels
in mg/100 ml.
dvdplayer.sav. This is a hypothetical data file that concerns the development of a new DVD
player. Using a prototype, the marketing team has collected focus group data. Each case
corresponds to a separate surveyed user and records some demographic information about
them and their responses to questions about the prototype.
german_credit.sav. This data file is taken from the “German credit” dataset in the Repository of
Machine Learning D atabases (Blake and Merz, 1998) at the University of California, Irvine.
grocery_1month.sav. This hypothetical data file is the grocery_coupons.sav data file with the
weekly purchases “rolled-up” so that each case corresponds to a separate customer. Some of
the variables that changed weekly disappear as a result, and the amount spent recorded is now
the sum of the amounts spent during the four weeks of the study.
grocery_coupons.sav. This is a hypothetical data file that contains survey data collected by
a grocery store chain interested in the purchasing habits of their customers. Each customer
is followed for four weeks, and each c ase c or responds to a separate customer-week and
records information about where and how the customer shops, including how much was
spent on groceries during that week.
