IBM SPSS COMPLEX SAMPLES 19 Water System User Manual


 
12
Chapter 2
Sampling Wizard: Output Variables
Figure 2-6
Sampling Wizard, O utput Variables step
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 root name 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_.