method of random proportional sampling

Proportion allocation in stratified random sampling

按比例分层随机抽样

gains from proportionate stratified sampling

按比例分层抽样的得益

timates in stratified random sampling

分层随机抽样的比率估计值

the population is divided into strata and a random sample is taken from each stratum.

总体分成阶层后由各阶层抽选出来的随机样本。

Methods The number of samples was calculated with the optimum allocation stratified random sampling survey.

应用最优分配随机分层抽样方法确定调查点。

Methods Stratified chester random sampling.

方法采用分层整群随机抽样的调查方法。

Multiple Impution for Missing Data in Stratified Random Sampling

分层随机抽样条件下缺失数据的多重插补方法

Comparision of Statistics Methods for Analysis of Multistage Clustered Randomized Data;

多阶段随机抽样数据统计分析方法比较

random sampling

随机抽样,随机采样

THE RATIO ESTIMATION OF RANDOMIZED TWO-PHASE SAMPLING SURVEY

二项抽样下随机化调查的比估计模型

Methods The investigated sites were selected by cluster sampling from13 cities.

方法在13个市采用整群分层随机抽样的方法选择调查点。

Stratified Cluster Sampling and Its Application on the Improved RRT Model for Sensitive Question Survey;

敏感问题改进的随机应答技术模型分层整群抽样研究及应用

Estimation of parameters in stratified cluster sampling on randomized response technique for sensitive question survey

敏感问题随机应答技术模型分层整群抽样下参数的估计

single random sampling

单次随机抽样 单次随机抽样

simple random sampling

简单随机抽样 简单随机抽样

estimation of sample size with proportions

比例抽样样本容量估计

covariance for simple random sampling

简单随机抽样协方差

precision of simple random sampling

简单随机抽样精密度