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。

youdao

Condition effect is an important source of non-sampling error in continuous surveys with matched samples.

条件的影响是有匹配样本的连续调查特有的计量误差来源。

youdao

The analysis of tolerated error in the selection of times for flow tests in hydrologic data available is the initial stage work for a hydrologic station to launch hydrologic surveys.

对已有水文资料的流量测验次数选择进行允许误差分析，是水文站开展水文巡测的前期性工作。

youdao

In reviewing the poll of polls, it turns out that virtually all of the major polling firms were well within the margin of error both nationally and in their battleground state surveys.

FORBES: Top 5 Lessons Of The 2012 Election-The Last Hurrah For Old White Men

Because of a technical error, in which some schools were not visible on a portion of company surveys for a period of about 10 to 14 days, some companies were contacted a second time and given a chance to revise their surveys.

WSJ: EMBA Rankings 2010, Wall Street Journal Methodology