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- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!paladin.american.edu!auvm!LEVEN.APPCOMP.UTAS.EDU.AU!BROBINSO
- Message-ID: <9209030048.AA17433@leven>
- Newsgroups: bit.listserv.stat-l
- Date: Thu, 3 Sep 1992 10:54:20 +1200
- Sender: "STATISTICAL CONSULTING" <STAT-L@MCGILL1.BITNET>
- From: brobinso@LEVEN.APPCOMP.UTAS.EDU.AU
- Subject: Re: polls, confidence, point estimates (OZ)
- X-To: STAT-L@VM1.MCGILL.CA
- Lines: 22
-
- >
- >Geoff Selig is right when he points out that there is a region around
- >a survey result representing out imprecision. The true value that we
- >are trying to measure has an X% (usually calculated as 5%) chance of
- > . . . .
- >To get a 4% error margin (+/-) 95 times out of a hundred, sampling from
- >a large population, you need a sample of 600. If the samples were actually
- >600 in each poll, the difference between the two percentages is 8% with
-
- Here in Oz, they usually use a sample size of about 2000, giving a
- tolerance of +/- 2%
-
- >ronan
- >
- >
-
- Barrie.
-
- --
- Barrie Robinson, |email:
- brobinso@leven.appcomp.utas.edu.au
- University of Tasmania at Launceston. |phone: (61)(03)260211
-