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Re: st: tabulate, summarize() for svy data
From
Steve Samuels <[email protected]>
To
[email protected]
Subject
Re: st: tabulate, summarize() for svy data
Date
Fri, 19 Mar 2010 13:12:05 -0400
On Fri, Mar 19, 2010 at 12:30 PM, Ricardo Ovaldia <[email protected]> wrote:
> Just to clarify. You multiplied the variance of the mean by the sample size of the population, to get the Standard Deviation and not the Standard error, correct?
YES
> If yes, do I compute the lower limit for the 95% CI using the SE as:
> local ll= el(mm,1,`i') - sqrt(el(VV,`i',`i'))*invttail(e(df_r),(5)/200)
> assuming a t-distribution?
NO
In general, e(V_srssubpop) has nothing to do with the standard errors
for survey data. (It only shows up in the computation of design
effects) To reproduce the confidence intervals shown by -svy: mean-,
use e(V).
Steve
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