bias

Chinese translation: 偏倚

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English term or phrase:bias
Chinese translation:偏倚

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21:54 Mar 13, 2009
English to Chinese translations [PRO]
Science - Mathematics & Statistics
English term or phrase: bias
Definition from Bureau of Justice Assistance:
The extent to which a measurement, sampling, or analytic method systematically underestimates or overestimates the true value of an attribute. FOR EXAMPLE, words, sentence structure, attitudes, and mannerisms may unfairly influence a respondent's answer to a question. Bias in questionnaire data can stem from a variety of other factors, including choice of words, sentence structure, and the sequence of questions.

Example sentence(s):
  • Increasing the sample size tends to reduce the sampling error; that is, it makes the sample statistic less variable. However, increasing sample size does not affect survey bias. A large sample size cannot correct for the methodological problems (undercoverage, nonresponse bias, etc.) that produce survey bias. stattrek.com
  • If, for example, the purpose is measuring average household income and the households without a phone have lower average income than others, ignoring the nonphone group will lead to an upward bias of average household income in the population. Of course the size of the bias would probably be limited in this example, because the group of households without a phone connection is small. rand.org
  • The Internet is an attractive mode of data collection to survey researchers due to cost savings and timeliness in comparison with other modes. However, survey estimates are subject to coverage bias if sampled persons with Internet access are systematically different from those without Internet access who were excluded from the survey. European Survey Research Association
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偏倚
Definition:
一切测量值对真值的偏离。包括测量仪器的不准,样本过小,试验设计不合理,分配或分组不均衡,抽样未随机,测量者有主观倾向等。任何试验必须尽可能排除偏倚,否则统计结论不可信。要保证试验无偏倚,必须有精确的测量方法,一定的样本量,周密的试验设计,随机化的抽样及分组,避免试验者的主观偏见等。
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Li Rui
China
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4 KudoZ points were awarded for this answer



Summary of translations provided
5 +2偏倚
Li Rui


  

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112 days   confidence: Answerer confidence 5/5 peer agreement (net): +2
偏倚


Definition from 百度百科:
一切测量值对真值的偏离。包括测量仪器的不准,样本过小,试验设计不合理,分配或分组不均衡,抽样未随机,测量者有主观倾向等。任何试验必须尽可能排除偏倚,否则统计结论不可信。要保证试验无偏倚,必须有精确的测量方法,一定的样本量,周密的试验设计,随机化的抽样及分组,避免试验者的主观偏见等。

Example sentence(s):
  • 系统误差即偏倚(bias):是指研究结果系统地偏离了真实情况。与随机误差不同,偏倚的存在总是造成研究结果或高于真值或低于真值,因而具有方向性。由于在研究工作中定量的估计偏倚的大小很困难,而确定偏倚的方向却相对较容易。当偏倚使研究结果高于真值时,称之为正偏倚,反之,偏倚使研究结果低于真值时,称之为负偏倚。 - 百度百科  
  • 临床研究中的偏倚一般分为三类,即选择偏倚、信息偏倚、混杂偏倚。 - 互动百科  
  • 当询问调查对象有关疾病、既往病史、个人习惯、特征或暴露史时,由于多种原因,使回答不准确而引起偏倚。如当询问病人某种暴露史,由于病人因自己患病,故对暴露史能记忆起来,而健康人由于不在意则常遗忘,这种偏倚称回忆偏倚(recall bias)有时偏倚是由于调查对象不愿意提供真实情况而引起,称报告偏倚(reporting bias)如有些人的冶游史、有的年轻人的吸烟史往往被隐瞒。调查中设法消除被调查者的顾虑。 - 中医世家  
Li Rui
China
Local time: 11:07
Native speaker of: Native in ChineseChinese
PRO pts in category: 4

Votes in favor of/against selecting this as the best translation of the term asked
Yes  Gertrude Tsau
43 days
  -> Thank you, Tsau

Yes  Baofeng Guo
123 days
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