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在学生体质健康调研工作中,在采用分层抽样时层面的划分通常是按一个特征设计的,方法比较简单。但是学生体质健康调研通常所涉及到的调查项目较多,而且调查的结果又与一个以上分层特征有关,故使用以往分层抽样的方法得不到满意结果。本文引入的“两特征分层抽样方法”可以高效地解决以上提出的问题;由于所抽取的样本近似简单随机样本,这将有利于最后的计算机统计分析。
In the study of students’ physical health, when using stratified sampling, the stratification is usually designed according to a characteristic, the method is relatively simple. However, most of the surveys on students’ physical health are involved in more surveys and the results of surveys are related to more than one stratification. Therefore, the results of past stratified sampling are not satisfactory. The “two-feature stratified sampling method” introduced in this paper can effectively solve the above-mentioned problems; since the extracted samples approximate simple random samples, it will be helpful for the final computer statistical analysis.