Self-selection bias and sampling bias are also discussed at the end of the paper.
与此相关的自选择偏差和抽样偏差问题也在文中进行了讨论。
Clinical trials take a long time because they're rigorously controlled, with close attention paid to sampling bias and methodology.
临床试验需要花费很长时间，因为它们处于严格控制之下，必须密切留意取样偏差与方法。
In order to reduce the effect of sampling bias in qualitative and quantitative results, it is necessary composition of the sample used be representative of the batch of drugs being examined.
为了减少取样偏差对定性、定量分析结果的影响，确保用来代表每批药品进行检验的样品量是必要的。
In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of survey data.
除了采样误差，在调查中提问的措辞和一些实际困难也会导致在采集数据中产生误差或偏差。
But critics have a point that genetic police work, like the sampling of arrestees, is fraught with bias.
他所说的是正确的。而评论家们持有一种观点认为如提取被捕者基因样本的基因治安是充满了偏见的。
The DSP realizes functions of sampling, PI regulation, communication and so on to digitally control the excitation current of arc-suppression coil with magnetic bias.
DSP主要完成采样、PI调节和通信等，实现偏磁式消弧线圈励磁电流的数字控制。
What possible sources of bias might have been introduced into the study by using this method of sampling.
由于使用该样本收集方法，该项研究有可能存在的偏见来源有哪些？
In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of public opinion polls.
除了取样错误之外，问题之文字表述、实际执行之困难亦会造成错误或偏诱，以致结果失真。
For the ratio estimate in two-stage sampling, the bias and mean square errors(MES) of the estimater value have been obtained, and the estimater value of the MSE has been given.
给出了二阶比估计量的偏差、估计量的均方误差以及均方误差的估计。
For the ratio estimate in two-stage sampling, the bias and mean square errors(MES) of the estimater value have been obtained, and the estimater value of the MSE has been given.
给出了二阶比估计量的偏差、估计量的均方误差以及均方误差的估计。
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