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st: standard deviation (not se) for survey data


From   Laura Piersol <[email protected]>
To   [email protected]
Subject   st: standard deviation (not se) for survey data
Date   Wed, 8 Sep 2004 17:57:42 -0700 (PDT)

Dear Stata-Listers, 

I have survey data (including strata, weights, and clusters) and I am trying to
estimate the standard deviation (not standard error) of the population. I know
Stata estimates the standard errors with a linearization for this type of
problem, so maybe Stata doesn't calculate the SD of the population as it would
under SRS??

The most relevant Stata reference I could find suggested backing out the SD
from �deff�. Since the denominator of �deff� (resulting from the command
svymean) is the variance of the mean under simple random sampling, multiplying
that denominator by n will return sigma^2. This is a way to get the population
standard deviation under simple random sampling, but this will not take account
of the sampling design as far as I can tell.

Does Stata calculate the population standard deviation which accounts for the
sampling design? 

Many many thanks for any help,

Laura
[email protected]



		
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