... sampling variability 抽样变异性 sampling variance 抽样变异数 sampling verification 抽样验证 ...
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...iiniYnEY(E1)1 () 有效性(Efficiency)• 一个估计量W的方差Var(W), 称为它的抽样方差(sampling variance),抽样方差是一个常数。
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minimum sampling variance 最小取样方差
sampling-variance with n-samples n样本抽样方差
sampling for variance 变量抽样法
variance for stratified sampling 分层抽样方差
variance between sampling units 抽样单位间方差
variance for cluster sampling 整群抽样方差
relative variance for cluster sampling [统计] 整群抽样的相对方差
variance for systematic sampling 系统抽样方差
rel-variance for double sampling [统计] 双重抽样的相对方差
A kind of nonlinear regression estimator for limited Population is given and the quality and the sampling variance about is discussed.
对有限总体在不放回抽样的方法下，构造了一类非线性回归估计量，讨论了它的性质及其有关抽样误差．。
It revealed that the product of the standard deviation of the estimated sampling variance and square root of the number of samples was a constant.
实验也证明，取样方差估计值的标准偏差与样本数目的平方根之积可近似为一常数。
Distance between dots should be uniform in the field measurement. Sampling number should be estimated by certain believe level, estimate accuracy and variance coefficient.
田间测墒时，点与点之间的距离要均匀，取样数目可以根据一定的置信水平、估值精度、变异系数做估算。
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