樣本和總體有什麽關聯?

回答: 何以見得?tsc122011-06-20 19:24:41

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The report is not based on samples. -khyang86- 給 khyang86 發送悄悄話 (0 bytes) () 06/20/2011 postreply 21:56:42

請您先登陸,再發跟帖!