Use this field to specify those variables that identify clusters in a clustered sample design. The combinations of categories of these variables define the clusters in the sample.
Note: If there are Strata Variables selected, clusters are nested within strata.
All of the variables in the specified input data set are displayed in the Available Variables field.
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Highlight the variable whose values identify clusters. To highlight multiple variables at once, hold down while left-clicking on them.
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Click
 to add the highlighted variable(s) to the Cluster Variables field, as shown below: |
