Focus in data quality assessment is non-sampling errors and variance, in addition to sampling errors.

在数据质量评估中，我们除对抽样误差进行检查外，重点是对非抽样误差和偏差的检查。

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Correlation functions between sample values in attribute data are used to measure data sampling errors quantitatively.

对于属性区域内部的定量属性抽样值，则建立了抽样值的相关函数表达式。

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Therefore, the improved FCM clustering results can reduce the sampling errors and retain the main attributes of cloud classification samples.

改进后的聚类结果既消除了采样误差，又保持了云类样本的基本特征属性。

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Romney campaigned Thursday in Florida, where two nonpartisan live operator polls conducted over the past two weeks both indicate Obama has a five-point advantage, which is within the surveys' sampling errors.

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The reason for this seemingly dotty result is that the errors from scientific sampling are easier to quantify (and minimise) than those arising from an imperfect head-count.

ECONOMIST: Statistics

Although sampling can also lead to errors if, for instance, the characteristics of the sample group differ from those of the population from which the sample is drawn the errors will be smaller and can be measured more precisely.

ECONOMIST: Statistics