Sampling Wizard: Output Variables

This step allows you to choose variables to save when the sample is drawn.

Population size. The estimated number of units in the population for a given stage. The rootname for the saved variable is PopulationSize_.

Sample proportion. The sampling rate at a given stage. The rootname for the saved variable is SamplingRate_.

Sample size. The number of units drawn at a given stage. The rootname for the saved variable is SampleSize_.

Sample weight. The inverse of the inclusion probabilities. The rootname for the saved variable is SampleWeight_.

Some stagewise variables are generated automatically. These include:

Inclusion probabilities. The proportion of units drawn at a given stage. The rootname for the saved variable is InclusionProbability_.

Cumulative weight. The cumulative sample weight over stages previous to and including the current one. The rootname for the saved variable is SampleWeightCumulative_.

Index. Identifies units selected multiple times within a given stage. The rootname for the saved variable is Index_.

Note: Saved variable rootnames include an integer suffix that reflects the stage number—for example, PopulationSize_1_ for the saved population size for stage 1.