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.
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