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Re: st: Need help on variance estimation using replication methods while incorporating raking


From   Steve Samuels <sjsamuels@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Need help on variance estimation using replication methods while incorporating raking
Date   Tue, 22 Nov 2011 20:33:08 -0500

Good point, Stas.  I was wrong.

Steve

On Nov 22, 2011, at 8:22 PM, Stas Kolenikov wrote:

To Steve: my understanding is that calibration, such as raking, does
reduce variances for a well-designed survey with no non-response, when
all of the survey error is the sampling error. Calibration then
reduces the sampling error of descriptive summaries of the variables
correlated with the calibration variables, but increases the sampling
error of say regression or logistic regression estimates, as it
increases variability of weights. 

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