stratified simple random sampling 中文意思是什麼
stratified simple random sampling
解釋
分層簡單隨機抽樣- stratified : 層化的
- simple : adj ( pler; plest)1 單純的;簡單的,簡易的;輕便的。2 質仆的,自然的,天真的;樸素的;率直的,...
- random : n 〈罕用語〉胡亂行為,偶然的[隨便的]行動[過程]。adj 1 任意的,胡亂的,隨便的;(話等)信口亂說的...
- sampling : n. 1. 取樣(品),取標(本)〈指行動或程序〉。2. 樣品,標本。3. 剽竊拼湊歌曲。
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Methods after a general cross - sectional hygienic survey which was carried out by filling in questionnaires, the source water 、 off - work water and pipe water sampled from 20 % subjects which were selected by stratified sampling and simple random sampling were tested
方法按設定的調查內容,先採用橫斷面現場普查填寫調查表的方法進行衛生學調查,然後按20 %的比例採用分層、隨機抽樣的方法,對水源水、出廠水、末梢水進行檢測。
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