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1·An inadequate sample size, a biased sample, a non-unique concept, and scientific flaws in the study are common faults.

样本大小不足，有偏差的样本，非独特的观念和研究中的科学缺陷。

2·Obviously working in the media is a biased sample, journalists are encouraged to tweet, post or forward funny and unusual material.

显然，在媒体工作是一个带有偏见的例子，记者被鼓励去特推，发布或转发有趣的和特殊的信息。

3·This is hardly definitive, given the small sample, but it does caution against jumping to the conclusion that economists are biased simply because of their relationships with firms.

由于样本数目小，只能当做参考，但还是比仅仅因为他们同公司间的关系就歧视他们要谨慎。

4·Assuming that the sample of Nova Scotia beer drinkers is not biased, can you now conclude that Keith's is the most popular brand?

假设新斯科舍省啤酒消费者统计样本没有发生偏差，您现在能够得出Keiths是最受欢迎品牌这一结论吗？

5·Sadly, UBS does not have any long-term data with which to compare this result (I checked), and since the sample is tiny, it may be very biased.

遗憾的是，瑞银没有任何能与这一结果相对照的长期数据(我核查过了)，而且由于样本数量很少，结果也可能偏差很大。

6·Your test player population is not going to be random sample. It will be a self-selected sample whose average motivations and behavior will be biased.

你的测试玩家人口不是随机样本，而是特定的样本拥有相同的动机和行为也会产生偏向。

7·The algorithm combines active learning, biased classification and incremental learning to model the small sample biased learning problem in relevance feedback process.

该算法将主动式学习、有偏分类和增量学习结合起来，对相关反馈过程中的小样本有偏学习问题进行建模。

8·The reasons there are two main expressions for population and sample is that one is biased estimator and the other is not.

“母体”与“样本”之所以有两种表达公式，是因为一个是有偏估计，另一个则不是。

9·We give the approximation formulas of the variance of the sample ratio estimator for a population mean and its asymptotically non-biased estimator in multi-stage sampling.

讨论多阶段抽样比率估计及其样本量选择的问题，给出了比率估计抽样均方误差的近似公式及其渐近无偏估计的公式。