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- Method 1228 women in 5 counties were surveyed by stratified cluster random sampling in the rural area of Yichang city. 方法:采用分层多阶段整群抽样方法,对该地区5县1228例农村育龄妇女进行问卷调查。
- The Regression Estimator in Cluster Random Sampling 整群抽样回归估计量
- CONCLUSION : The calculation formulas of multiple-stratifying and clustering random sampling are theoretically set up. 结论 : 推导并建立多重分层、整群随机抽样误差的计算公式。
- Methods: Cluster randomized sampling method for selecting subjects and multinomial logistic regression were used to analyze these data. 方法:采用分层整群随机抽样调查搜集资料,采用多序类回归分析筛选影响因素。
- cluster random sampling 整群随机抽样,分群抽样法
- There are many applications for random sampling. 随机抽样有许多应用场合。
- Methods Stratified chester random sampling. 方法采用分层整群随机抽样的调查方法。
- two-stage clustered randomized sampling 二阶段随机抽样
- Conduct first article inspection and random sampling inspection. 进行首件检验和抽查检验。
- We did the random sampling of five pieces per batch of 100. 我们在每批一百件的货品中取五件随机抽样。
- Method The sampling of individuals was done by the lamination random sampling. 方法采用分层随机抽样法进行人群抽样,用改良加藤氏法粪检华支睾吸虫虫卵。
- DESIGN: Clustering stratified random sampling, cross-sectional survey. 设计:整群分层随机抽样,横断面调查。
- The course include of sample and random sampling, probability function, regression analysis, discriminant analysis, cluster analysis and factor analysis. 内容为:样本与随机抽样、分布函数、显著性检验、回归分析、判别分析、聚类分析和主成分分析。
- The method uses small random samples and the limits of a hyperbola. 该方法采用了小范围随机抽样和双曲线的极限。
- The interviews were given to a random sample of students. 随机抽选出部份学生进行了采访。
- Are the sampling arrangements based on random sampling or other accepted control methods? 样本抽查是否以随机抽查或其他认可的方法进行?
- Objective Explore the method for the estimation of sample size in two stage cluster randomization tirals. 目的探讨两阶段整群随机化设计两组比较样本例数估计方法。
- The opinion poll was based on a random sample of adults. 这次民意测验结果是在对成年人的随机抽样调查基础上得出来的。
- Keywords two-stage clustered randomized sampling;intraclass correlation coefficient;bias;coverage; 二阶段随机抽样;内部相关系数;偏倚;覆盖率;
- Some retailers pull 3-4 random samples from each product group. 一些零售商随机从每批产品中抽取3-4件样品。