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The SURVEYMEANS Procedure

Domain Statistics

When you use a DOMAIN statement to request a domain analysis, the procedure computes the requested statistics for each domain.

For a domain , let be the corresponding indicator variable:

     

Let

     

The requested statistics for variable in domain are computed by using the new weights .

Domain Mean

The estimated mean of in the domain is

     

where

     

The variance of is estimated by

     

where if ,

     
     
     

and if ,

     

Domain Total

The estimated total in domain is

     

and its estimated variance is

     

where if ,

     
     
     

and if ,

     

Domain Ratio

The estimated ratio of to in domain is

     

and its estimated variance is

     

where if ,

     
     
     

and if ,

     
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