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Sample Files
nhis2000_subset.sav. The National Health Interview Survey (NHIS) is a large, population-based
survey of the U.S. civilian population. Interviews are carried out face-to-face in a nationally
representative sample of households. Demographic information and observations about
health behaviors and status are obtained for members of each household. This data
file contains a subset of information from the 2000 survey. National Center for Health
Statistics. National Health Interview Survey, 2000. Public-use data file and documentation.
ftp://ftp.cdc.gov/pub/Health_Statistics/NCHS/Datasets/NHIS/2000/. Accessed 2003.
ozone.sav. The data include 330 observations on six meteorological variables for predicting
ozone concentration from the remaining variables. Previous researchers (Breiman and
Friedman, 1985), (Hastie and Tibshirani, 1990), among others found nonlinearities among
these variables, which hinder standard regression approaches.
pain_medication.sav. This hypothetical data file contains the results of a clinical trial for
anti-inflammatory medication for treating chronic arthritic pain. Of particular interest is the
time it takes for the drug to take effect and how it compares to an existing medication.
patient_los.sav. This hypothetical data file contains the treatment records of patients who were
admitted to the hospital for suspected myocardial infarction (MI, or “heart attack”). Each case
corresponds to a separate patient and records many variables related to their hospital stay.
patlos_sample.sav. This hypothetical data file contains the treatment records of a sample
of patients who received thrombolytics during treatment for myocardial infarction (MI, or
“heart attack”). Each case corresponds to a separate patient and records many variables
related to their hospital stay.
poll_cs.sav. This is a hypothetical data file that concerns pollsters’ efforts to determine the
level of public support for a bill before the legislature. The cases correspond to registered
voters. Each case records the county, township, and neighborhood in which the voter lives.
poll_cs_sample.sav. This hypothetical data file contains a sample of the voters listed in
poll_cs.sav. The sample was taken according to the design specified in the poll.csplan plan
file, and this data file records the inclusion probabilities and sample weights. Note, however,
that because the sampling plan makes use of a probability-proportional-to-size (PPS) method,
there is also a file containing the joint selection probabilities (poll_jointprob.sav). The
additional variables corresponding to voter demographics and their opinion on the proposed
bill were collected and added the data file after the sample as taken.
property_assess.sav. This is a hypothetical data file that concerns a county assessor’s efforts to
keep property value assessments up to date on limited resources. The cases correspond to
properties sold in the county in the past year. Each case in the data file records the township
in which the property lies, the assessor who last visited the property, the time since that
assessment, the valuation made at that time, and the sale value of the property.
property_assess_cs.sav. This is a hypothetical data file that concerns a state assessor’s efforts
to keep property value assessments up to date on limited resources. The cases correspond
to properties in the state. Each case in the data file records the county, township, and
neighborhood in whi ch the property lies, the ti me since the last assessment, and the va luation
made at that time.
property_assess_cs_sample.sav. This hypothetical data file contains a sample of the properties
listed in property_assess_cs.sav. The sample was taken according to the design specified in
the property_assess.csplan plan file, and this data file records the inclusion probabilities