statistical bias

[/stəˈtɪstɪkəl ˈbaɪəs/]
nounpl: statistical biases
viés estatístico
1. A systematic error in a statistical estimator that causes it to consistently overestimate or underestimate a parameter; the difference between the expected value of an estimator and the true value of the parameter being estimated
The survey showed a statistical bias toward urban respondents, skewing the results.
A pesquisa mostrou um viés estatístico em direção aos respondentes urbanos, distorcendo os resultados.
2. Any systematic deviation from the true value in data collection, measurement, or analysis that affects the accuracy of statistical conclusions
Researchers must account for statistical bias when designing experiments to ensure valid results.
Os pesquisadores devem levar em conta o viés estatístico ao projetar experimentos para garantir resultados válidos.
3. A tendency in a statistical method or procedure that leads to consistently incorrect estimates
Selection bias is a common statistical bias in observational studies.
O viés de seleção é um viés estatístico comum em estudos observacionais.
In Brazilian academic and research contexts, 'viés estatístico' is the standard technical term used in statistics courses, research papers, and professional data analysis. The concept is critical in Brazilian social science research, market research, and public health studies. In Portugal, 'enviesamento' may also be used but 'viés' is increasingly common. Both countries follow international statistical standards where bias mitigation is essential for research credibility.
Synonyms / Sinônimos
systematic errorsystematic deviationestimator biaserror bias
Antonyms / Antônimos
unbiased estimatoraccuracyobjectivity

Regional Variations

General Brazilian
viés estatístico
Standard term used in academic and professional contexts
Portugal
enviesamento estatístico
Alternative term emphasizing the concept of skewing; also 'viés estatístico' is understood
Academic/International
viés (noun); viés estatístico (full term)
Increasingly using English 'bias' directly in technical discussions

Related Words

sampling biasselection biasconfirmation biasmeasurement errorrandom errorstandard errorestimatorparameter estimation

Related Idioms & Phrases

to introduce bias into a study
to account for bias
to minimize statistical bias
to correct for bias
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