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Cluster Sampling Out of Clusters of Unequal Sizes
Author(s): 
Pages: 107-112
Year: Issue:  5
Journal: JOURNAL OF XIAMEN UNIVERSITY (ARTS & SOCIAL SCIENCES)

Keyword:  整群抽样抽样效率麦多方法;
Abstract: 在社会经济领域中,群大小不等是常见的现象.在群大小不等条件下进行整群抽样最主要的问题是样本群大小的随机变动.样本群大小的随机变动会给抽样调查带来种种不利的影响.要提高整群抽样估计的准确度,就必须控制样本群大小的变动.在群大小不等条件下,简单随机抽样无偏估计方法是不可取的,应尽可能地采用麦多方法、PPS方法或简单随机抽样比率估计方法,以提高整群抽样效率.另外,改进总体推估方式也是提高整群抽样效率的简便方法,应值得高度重视.
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