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Chapter 2
Sampling Wizard: Draw Sample Selection Options
Figure 2-8
Sampling Wizard, Draw Sample Selection Options step
This step allows you to choose whether to draw a sample. You can also control other sampling
options, such as the random seed and missing-value handling.
Drawsample. In addition to choosingwhether to draw a sample, you can also choose to execute
part of the sampling design. Stages must be drawn in order—that is, stage 2 cannot be drawn
unlessstage 1 is also drawn. Whenediting or executing a plan, you cannot resample locked stages.
Seed. This allows you to choosea seedvalue for random number generation.
Include user-missingvalues. This determines whether user-missing values are valid. If so,
user-missing values are treated as a separatecategory.
Dataalready sorted. If your sample frame is presorted by the valueso f thestratification variables,
this option allows you to speed the selection process.