systematic variance
[ˌsɪs.təˈmæt.ɪk ˈvɛr.i.əns]
nounpl: systematic variances
variância sistemática
1. In statistics and research methodology, the component of variance in measurements or observations that is predictable and caused by identifiable factors, as opposed to random error
The systematic variance in the experiment was attributed to differences in temperature control across measurement sessions.
A variância sistemática no experimento foi atribuída às diferenças no controle de temperatura entre as sessões de medição.
2. In measurement and assessment, bias or consistent deviation from true values caused by specific factors in the measurement system or environment
Calibration errors introduced systematic variance into all the scale measurements.
Erros de calibração introduziram variância sistemática em todas as medições da escala.
3. In research design, variation in results that can be explained by known variables rather than chance or random fluctuation
Researchers controlled for systematic variance by standardizing the testing procedures.
Os pesquisadores controlaram a variância sistemática padronizando os procedimentos de teste.
This is technical terminology primarily used in academic and scientific contexts in both Brazil and the USA. It is essential vocabulary for students and professionals in statistics, psychology, medicine, engineering, and other research-based fields. The term reflects the importance of rigorous methodology in separating true effects from measurement artifacts in both English and Portuguese-speaking academic communities.
Related Idioms & Phrases
control for systematic variance
account for systematic variance
reduce systematic variance
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