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.
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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.
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此外,我们探讨复杂抽样下,该估计值的推广.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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研究采用随机抽样的方法, 对沈阳市134名体育彩票忠实消费者和87名体育彩票一般消费者进行了问卷调查.
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The random that can generate length to amount to 128 K with tall sampling rate is undee.
可以以高采样速率生成长度达128K的任意波形.
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首先通过构造圆柱面上点的高斯图和任意采样的方法,计算出简单牙合架转动轴线方程。
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