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RE: ID cards - What wasn't mentioned about the results of the consultation exercise |  |
- To: <[EMAIL PROTECTED]>
- Subject: RE: ID cards - What wasn't mentioned about the results of the consultation exercise
- From: "Peter Mitchell" <[EMAIL PROTECTED]>
- Date: Tue, 2 Nov 2004 16:20:49 -0000 (GMT)
- In-reply-to: <[EMAIL PROTECTED]>
- References: <[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
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Owen Lewis said:
>
> Could you give an example of that? E.g. Population is 75,000. Sample
> size is 2,500. Sqrt of sample is 50. So forecast accuracy is?
If the population is approximately evenly split, the sample mean will
"probably" be within 2% of the population mean.
The exact meaning of the word "probably" in this context is not
straightforward, though.
And when
> sample is the same but the population is 750,000,000?
It doesn't matter what the population size is.
--
Pete Mitchell
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