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第二章 抽样调查基本理论 PowerPoint PPT Presentation


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第二章 抽样调查基本理论. 第一节 总体和样本. 一.总体. 通常指所 调查研究对象的全体。 在抽样调查中,总体是指能从中抽取样本的综合体。. 由于实际存在的总体与人们抽样时所认识的总体可能不一致,所总体有以下两种概念。. 全及总体. 也称目标总体,即所需要研究说明的全部单位集合体。即不论人们认识与否,所有符合规定的单位合在一起,构成全及总体。在抽样调查中,全及总体是 抽样推断的目标 。例:居民收入情况调查:.

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第二章 抽样调查基本理论

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