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Date:   Wed, 15 Oct 2003 22:23:36 +0200
Reply-To:   Stéphane (datametric) <scolas@DATAMETRIC.FR>
Sender:   "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:   Stéphane (datametric) <scolas@DATAMETRIC.FR>
Subject:   The return of Boostrapping
In-Reply-To:   <002101c39356$7449a5c0$a4a6c2d4@datametr>
Content-Type:   text/plain; charset="iso-8859-1"

Hi all,

I would like to know something about boostrapping.

In september, you answer to the question about randomly sampling observations with the SURVEYSELECT procedure.

This proc provides methods for equal probability sampling.

* In equal probability sampling, each unit in the sampling has the same probability of being selected for the sample. But, if each unit has not the same probability of beign selected, do you know the good method and good proc to sampling ? I don't have any discussions or papers about this. * My second problem is the SURVEYMEAN. This proc can't calculate the variance associated with the inequal probability sampling.

So my questions are : 1. Have you an article about the inequal probability sampling ? 2. I heard voice (in the air...) about the Sunter's algorithm, there is a relation with this ? 3. Have you a solution to do the sampling with inequal proba and to calculate the variance in this case ?

Thanks

Stephane.

-----Message d'origine----- De : SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] De la part de Stéphane (datametric) Envoyé : mercredi 15 octobre 2003 21:57 À : SAS-L@LISTSERV.UGA.EDU Objet : RE : SAS baking, direct marketing, finance ...

Hi all,

After this little explanation, I would like to know something about boostrapping.

In september, you answer to the question about randomly sampling observations.

With the proc surveyselect, we work on

-----Message d'origine----- De : SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] De la part de David L. Cassell Envoyé : mercredi 15 octobre 2003 19:33 À : SAS-L@LISTSERV.UGA.EDU Objet : Re: SAS baking, direct marketing, finance ...

Nigel.Pain@SCOTLAND.GSI.GOV.UK replied: > What's wrong with the spelling? Maybe it's a difference between nations. If > so, how do you folk across the pond spell "baking".

We here in Umur'ca pronounce the word without the 'g'. Bakin'. :-)

But the original poster mis-typed the word 'banking'.

I guess someone whose name means 'bread' in French would naturally be supportive of the baking industry! :-)

David -- David Cassell, CSC Cassell.David@epa.gov Senior computing specialist mathematical statistician

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