样本指标,也称为样本统计量或抽样指标,它是由样本地各个标志值计算的、用以估计和推断相应总体指标的综合指标。样本指标的数值是一个随机变量,它的不同取值取决于不同的样本;样本指标通过抽样调查是可知的。
第二个问题涉及到样本指标的充足性问题,这被认为是真正性能的标志。
The second issue concerns the sufficiency of the sample of indicators considered signifying authentic performance.
利用层次分析方法给出了样本指标的权重,进一步引入了加权相似系数和加权距离系数的计算公式。
The weights of sample index are given by analytical hierarchy process, and expressions of weighted similar coefficient and weighted distance coefficient are induced.
样本中没有压裂液的指标发现。
No indicators of fracturing fluids were found in the samples.
There's also another variance measure, which we use in the sample-- There's also another variance measure, which is for the sample.
还有另一个离散指标,我们用以考察样本,这是另一个离散指标,用于考察样本
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