bias

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15:02 Jun 10, 2009

English to Lithuanian 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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Summary of translations provided

Sisteminė paklaida

Justas Staniulis

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Sisteminė paklaida

Definition from Wikipedia:
Sisteminė paklaida (angl. systematic error arba bias) – tai sisteminis tyrimo rezultatų nuokrypis nuo tikrosios vertės. Priešingai nei atsitiktinė paklaida, sisteminė dažnai iškreipia duomenis į vieną pusę nuo tikrosios vertės, pvz., netikslus prietaisas rodo kiek didesnę nei tikroji vertę, arba tyrėjas atidžiau stebi ir seka tiriamuosius, esančius poveikio, bet ne kontrolės grupėje (tyrėjo paklaida).

Example sentence(s):

Atliekant labai daug eksperimentų, vidurkio tikslumas įgauna sisteminę paklaidą. - EUR-Lex
Sisteminė paklaida – kai tendencingai iškreipiamas imties dydis. - Klaipėdos universitetas

Justas Staniulis
Local time: 10:06
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Lithuanian

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