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anan8533
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binbinc2008
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- ÔÚÏß: 15.7Сʱ
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anan8533(½ð±Ò+4): 2011-05-18 12:46:29
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×ÜÌå·½²îÊǽРpooled variance °É£¬ ¸ù¾Ý¹«Ê½ s=[(n1-1)s1+(n2-2)s2+...+(nk-1)sk]/(n1+n2+...+nk-k)£¬ µÃµ½ s=(m-1)(y1+y2+...+ym)/(N-m) ²Î¿¼£º http://en.wikipedia.org/wiki/Pooled_variance |
3Â¥2011-05-17 19:43:40
anan8533
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4Â¥2011-05-17 21:06:56
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5Â¥2011-05-17 21:10:14
binbinc2008
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6Â¥2011-05-18 19:34:08
anan8533
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7Â¥2011-05-18 20:48:05
anan8533
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- ×¢²á: 2008-09-10
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8Â¥2011-05-18 20:54:29
binbinc2008
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- ÔÚÏß: 15.7Сʱ
- ³æºÅ: 1051981
- ×¢²á: 2010-07-05
- ÐÔ±ð: GG
- רҵ: ¸ÅÂÊÂÛÓëËæ»ú·ÖÎö
9Â¥2011-05-19 12:44:11













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