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disiz64 Wrote:
> Ok. Thank you.
So I heard back. The question and the answer are correct. When you have a sample from a population and you need fourth quintile of the POPULATION, you use (n+1)y/100
In case you have the sample and you need to find the fourth quintile of the SAMPLE, you use ny/100 (that's what I understand) |
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发表于 2011-7-13 16:16
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