uncontrolled variance
[/ˌʌnkənˈtroʊld ˈvɛriəns/]
nounpl: uncontrolled variances
variância não controlada
1. In statistics and experimental design, variation or deviation from expected values that occurs due to unmeasured or unaccounted factors, not attributable to the independent variable being studied
The uncontrolled variance in the experiment resulted from differences in room temperature and humidity.
A variância não controlada no experimento resultou de diferenças na temperatura e umidade da sala.
2. Unexpected fluctuation or inconsistency in data, results, or processes that cannot be explained or regulated
High uncontrolled variance makes it difficult to draw reliable conclusions from the research.
A alta variância não controlada torna difícil tirar conclusões confiáveis da pesquisa.
3. In quality control and manufacturing, unwanted variation in product specifications or process outcomes without proper management or mitigation
The factory implemented new procedures to reduce uncontrolled variance in production quality.
A fábrica implementou novos procedimentos para reduzir a variância não controlada na qualidade da produção.
This is a technical term primarily used in academic, scientific, and industrial contexts in both Brazil and the United States. It is essential in quality management (particularly in Six Sigma and lean manufacturing), statistical analysis, and experimental research. In Brazilian universities and research institutions, the term is widely recognized among professionals in engineering, statistics, and quality control fields.
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