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- 2014-2-6
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- 2014-11-18
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请教一个Statistical Concepts and Market Returns 的问题
| The following ten observations are a sample drawn from a normal population: 25, 20, 18, -5, 35, 21, -11, 8, 20, and 9. The fourth quintile (80th percentile) of the sample is ? |
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发表于 2014-4-16 10:29
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