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Re: st: Survey Estimation, stata manual, example: multistage.dta


From   Steven Samuels <[email protected]>
To   [email protected]
Subject   Re: st: Survey Estimation, stata manual, example: multistage.dta
Date   Sun, 10 Jun 2007 10:08:06 -0400

1. There is no "class" variable in http://www.stata-press.com/data/r9/ multistage.dta.
2. The sampling was done in three stages within stages: County, School, and Person. The probability of selecting persons could vary within the same school, hence the sampling weights are not constant within School


On Jun 9, 2007, at 7:31 AM, Rainer Schnell wrote:


Hello,

has anyone an explanation why the sampling weights of a two stage sample
(PSU county, SSU class) varies within a class of the stata demonstration file? The variable sampwgt in the
demo data file (multistage.dta) is not constant within county, class. Is this an error in the file, the manual or
do I miss something?

Many thanks for any hint

Rainer Schnell




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