查询词典 systematic sampling

15 hospitals and 2 937 residents were selected and studied through random and systematic sampling methods in Hainan Province.

采用分层抽样和随机抽样方法对15家医疗机构和2 937名疟区居民进行流行病学调查。

A systematic procedure for sampling subject matter should be described and used.

应当利用并详述对内容抽样的系统化程序。

Based on systematic sampling and investigation of agricultural soil, the geochemistry characters of agriculture soil of Xi'an city were studied.

通过取样调查和实验分析，研究了西安市郊农田土壤环境的地球化学特征。

The outpatients expenses in a teaching hospital in Shiyan were investigated by means of systematic sampling.

本文采用系统抽样的方法，调查了某医院门诊病人费用情况及有关因素。

With the methods of systematic and random sampling, the 39 grasshopper species and more than 3000 specimens had been collected in 5 kinds of habitats, belonging to 5 families, 26 genera.

采用系统取样和随机取样相结合的方法调查了5种生境中蝗虫的种类和数量，共采集到蝗虫39种，标本3000余号，隶属于5科26属。

It had good reliability and validity. Using systematic random sampling techniques, we sampled normal sample group (N = 1103) from Shandong province.

本部分还对一我国城市居民主观幸福感的构成成分进行了实证的探索，探索性因素分析和验证性因素分析的结果，支持了第一部分提出的有关假定。

To undertake a systematic random sampling, one needs to know the total number of households, the average number of children under 5 years of age in a household, and the total population.

要进行一次系统随机抽样，必需知道该人群中的家庭总数，每户家庭5岁以下儿童的平均数，以及总人口。

Methods 3944 persons were selected by systematic sampling in 3 districts.

采取分层随机整群抽样的方法，于2006年10月和2007年9月进行2次调查，以示范路上沧浪区、金阊区、高新区的33个单位、10个社区居民，共计3 944人作为调查对象。2007年9月，以非示范路上某区采取同样方法抽取居民809人进行问卷调查。

Methods Questionaires were gotten by 1/10 systematic random sampling in age 20 and elder than 20 in an urban community of Jinan.

1995年国际糖尿病联盟在世界糖尿病日提出的口号是"尽量减少因对糖尿病无知而付出的代价。"

All subjects in the sample of 600 individuals were selected by a stratified systematic random sampling method and interviewed by trained interviewers.

本研究采横断面研究方法，以苗栗县所有65岁以上老年人作为研究母群体，采分层随机抽样的方法，共得到600位样本，其中男性302人，女性298人。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。