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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