We guess this is due to the small sample bias and the short time span of our data.

我们认为这是因为小样本误差和数据所在时间跨度较短所造成的。

youdao

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。

youdao

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？

youdao

This so-called "survivorship bias" skews returns simply because more losers are eliminated from the sample.

FORBES: Whats the Hurry?