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Re: st: Selecting a sample to compromise between significant size and geographical dispersion
From
Partho Sarkar <[email protected]>
To
[email protected]
Subject
Re: st: Selecting a sample to compromise between significant size and geographical dispersion
Date
Fri, 16 Sep 2011 20:02:49 +0530
Thanks a lot again, Steve. Of course I do get your point about a
statistically sound stratification scheme, which would also enable
estimation of standard errors of estimates. Let me explore this, and
see how best I can fit it within my project timeline. In practical
terms however, I think I need to stay within the Stata environment as
far as possible for the time being.
Regards
Partho
On Fri, Sep 16, 2011 at 6:50 PM, Steven Samuels <[email protected]> wrote:
> Partha, Your problem is a fairly standard one, with some wrinkles, and the standard solution begins with optimal stratum formation (which can include take-none strata) and optimal allocation of observations to strata. The calculations minimize estimation error for a bound on cost or vice-versa. Your iterative scheme ignores estimation error and so will be non-optimal. I strongly suggest that you consult a good sampling text or a sampling statistician instead of spending your time on an inferior, possibly disastrous, design.
>
> Steve
>
> On Sep 16, 2011, at 3:34 AM, Partho Sarkar wrote:
>
> Thank you, Steven. The program looks promising at first glance-I will
> look at it in detail later. For the time being, I think I can put
> together an iteration method within Stata. I will report back here on
> this.
>
> Regards
> Partho
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