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Re: st: Selecting a sample to compromise between significant size and geographical dispersion


From   Steven Samuels <sjsamuels@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Selecting a sample to compromise between significant size and geographical dispersion
Date   Thu, 15 Sep 2011 17:47:38 -0400

Partho-

The "stratification" package in R might meet your needs.

Steve

On Sep 15, 2011, at 4:42 AM, Partho Sarkar wrote:

To clarify further, this is not really a case of defining a population
by the size of units.  What I am trying to do is to get a country
level price-index as an alternative to the official index (which is
also obtained from a sample of markets across the country, selected
with similar considerations).  The only reason to impose a cut-off is
that I have found (as one might expect)  that including EVERY market
reporting a price at every date results in an index which is much more
volatile compared to the official index.

Partho
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