random sampling

Two kinds of estimators were compared under PPS sampling and simple random sampling with replacement.

本文在PPS抽样方案和有效回简单随机抽样方案的情形下构造了这两种估计并精确比较了它们的优劣.

Methods A random sampling inspection could be combined with special - purpose rectification.

方法突击抽样检查和专项整顿相结合,抽样比对.

The generalization of post stratification from the simple random sampling to complex design is discussed.

此外,我们探讨复杂抽样下,该估计值的推广.

Survey is also available web for input from clubs that were not in the random sampling.

调查也扩及由扶轮社于网上输入资料,这并不包括在随机抽样中.

This study adopted two - stage random sampling method. The valid subjects were 300.

本研究采二阶段随机抽样方法, 有效样本共300位.

Methods Cluster sampling and random sampling Methods: Were used to choose the subject.

方法采用整群随机抽样和单纯随机抽样方法确定调查对象.

CLAP adopts the random - sampling technique to make the clustering algorithm to be more efficient.

CLAP算法通过使用随机抽样技术,提高了聚类算法的效率.

Methods Stratified chester random sampling.

方法采用分层整群随机抽样的调查方法.

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.

In a simple random sampling, the sample mean is an unbiased estimate of the population mean.

在简单随机抽样中, 样本均值是总体均值的无偏估计.

METHOD Random sampling study and collect data by questionnaire survey and examination.

方法采取整群随机抽样,信函问卷、实地测试等调查.

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.

This study is a significant reference to the composite random sampling of bulk materials in practice.

该项研究对于大宗货物的实际随机取样具有重要参考价值.