15
Sampling from a Complex Design
Sampling Wizard: Draw Sample Output Files
Figure 2-9
Sampling Wizard, Draw Sample Output Files step
This step allows you to choose where to direct sampled cases, weight variables, joint probabilities,
and case selection rules.
Sampledata. These optionslet you determine where sample output is written. Itcan be added to
the active dataset, writtento a new dataset, or saved to an external IBM® SPSS® Statistics data
file. Datasets are available during the current session but are not available in subsequent sessions
unless you explicitlysave them as data files. Datasetnames must adhere to variable naming rules.
If an external file or new dataset is specified, thesampling output variables and variables in the
active dataset for the selected cases are written.
Jointprobabilities. Theseoptions let you determine where joint probabilities are written. They are
saved to an external SPSS Statisticsdata file. Joint probabilitiesare produced if the PPS WOR,
PPSBrewer, PPS Sampford, or PPS Murthy method is selected and WR estimation is not specified.
Caseselection rules. If you are constructing your sample one stageat a time, you may want to
save the case selection rulesto a text file. They are useful for constructing the subframe for
subsequent stages.