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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.
Draw sample. In addition to choosing whether 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
unless stage 1 is also drawn. When editing or executing a plan, you cannot resample locked stages.
Seed. This allows you to choose a seed value for random number generation.
Include user-missing values. This determines whether user-missing values are valid. If so,
user-missing values are treated as a separate category.
Data already sorted. If your sample frame is presorted by the values of the stratification variables,
this option allows you to speed the selection process.