Meaning of “bias” in the English Dictionary

"bias" in British English

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uk /ˈbaɪ.əs/ us /ˈbaɪ.əs/

bias noun (PREFERENCE)

C2 [ C usually singular, U ] the action of supporting or opposing a particular person or thing in an unfair way, because of allowing personal opinions to influence your judgment:

The senator has accused the media of bias.
Reporters must be impartial and not show political bias.
There was clear evidence of a strong bias against her.
There has always been a slight bias in favour of/towards employing liberal arts graduates in the company.
Unconscious bias (= that the person with the bias is not aware of) can influence decisions in recruitment, promotion, and performance management.

[ C usually singular ] the fact of preferring a particular subject or thing:

She showed a scientific bias at an early age.

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biasverb [ T ]

uk /ˈbaɪ.əs/ us /ˈbaɪ.əs/ -s- or UK also -ss-

to cause someone or something to have a bias:

The judge ruled that the information should be withheld on the grounds that it would bias the jury against the accused.

(Definition of “bias” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"bias" in American English

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biasnoun [ C/U ]

us /ˈbɑɪ·əs/

an unfair personal opinion that influences your judgment:

[ U ] They vowed to fight racial bias in the school.
[ C usually sing ] Does news coverage reflect a reporter’s bias?
verb [ T ] us /ˈbɑɪ·əs/ -s-, -ss-

The judge withheld the information on the grounds that it would bias the jury.

(Definition of “bias” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"bias" in Business English

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uk /ˈbaɪəs/ us

[ C, usually singular or U ] the fact of allowing personal opinions to influence your judgment in an unfair way:

In her view, none of the interview panel had shown any bias.
gender/racial bias a federal law prohibiting gender and racial bias in employment
bias against sb/sth The email suggested a clear bias against American products.
bias in favour of sb/sth The company showed a marked bias in favour of employing men.
a clear/definite/strong bias

[ C, usually singular ] the fact of preferring someone or something:

bias towards sb/sth In general, investment trusts have more of a bias towards emerging markets, including the Far East.

[ C or U ] the fact that information is not correct because of the method used in collecting or presenting it:

In the market research there was a bias in the sample of people who were selected to give their opinions.
There is a need to build in safeguards against statistical bias.

[ C or U ] FINANCE the fact of prices, etc. increasing or decreasing:

Interest rates are set to have an upward bias in the next 12 months.

(Definition of “bias” from the Cambridge Business English Dictionary © Cambridge University Press)