PROC SURVEYMEANS: Domain Statistics :: SAS/STAT(R) 9.22 User's Guide

The SURVEYMEANS Procedure

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

For a domain $\text{[math]}$ , let $\text{[math]}$ be the corresponding indicator variable:

$\text{[math]}$

Let

$\text{[math]}$

The requested statistics for variable $\text{[math]}$ in domain $\text{[math]}$ are computed by using the new weights $\text{[math]}$ .

The estimated mean of $\text{[math]}$ in the domain $\text{[math]}$ is

$\text{[math]}$

where

$\text{[math]}$

The variance of $\text{[math]}$ is estimated by

$\text{[math]}$

where if $\text{[math]}$ ,

and if $\text{[math]}$ ,

$\text{[math]}$

The estimated total in domain $\text{[math]}$ is

$\text{[math]}$

and its estimated variance is

$\text{[math]}$

where if $\text{[math]}$ ,

and if $\text{[math]}$ ,

$\text{[math]}$

The estimated ratio of $\text{[math]}$ to $\text{[math]}$ in domain $\text{[math]}$ is

$\text{[math]}$

and its estimated variance is

$\text{[math]}$

where if $\text{[math]}$ ,

and if $\text{[math]}$ ,

$\text{[math]}$