randomized sampling中文什么意思

例句与用法

1. M ethods : randomized sampling method was adopted , and reproductive age women of fl oating population in 6 regions in wuhan were investigated in questionnaires of u nity structure
   方法：随机抽取武汉市6个城区流动人口育龄妇女，用统一结构式问卷进行调查。
2. Methods a self - administered questionnaire was delivered to local residents in order to get information on the responsiveness of clinic patients . 4 communities , 202 local residents were recruited by cluster - randomized sampling
   方法采用整群随机抽样的方法抽4个社区，对一年内有住院经历的加2名病人由调查员询问并填写调查表。