但是这么做很可能会导致统计偏差太大。

That is likely to lead to a significant statistical bias.

youdao

地震群是另一个控制源，因为有许多地震连续冲击数据库然后造成统计偏差，因此它们从数据库中被抽除了。

Quake swarms are another source of control, as they pepper the databases with many quakes and skew the statistics, and thus are pulled from the database.

youdao

班菲尔德还指出，引起统计偏差的一个因素还可能是与其他一些像希腊那样的国家相比，英国的零售商更倾向于记录失窃。

'Bamfield said one factor skewing the statistics was also likely to be that retailers in Britain were more likely to log and record thefts compared to other nations, such as Greece.

youdao