length bias sample 长度偏差子样
sample bias 样本偏差
Sample selectivity bias 选择性偏误
linear sample bias 线性试样偏差
bias check sample 偏压检验试样
small sample bias 小样本偏误
sample selection bias 样本选择性偏差
We believe these strong discontinuities indicate a sample bias, perhaps as a result of instrument characteristics.
我们相信，这些非常明显的不连续表明存在取样偏差，也许要归因于工具特性。
Thirdly is the sample representative or is there a bias in it due to whatever.
再次，样本有代表性吗,或者其中有偏见吗？
Not only does this restrict the sample size, it also introduces an obvious source of bias.
这不仅限制了样本容量，也引入了明显的偏差来源。
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