control variable
[/kənˈtroʊl ˈvɛriəbəl/]
nounpl: control variables
variável de controle
1. In research and statistics, a variable that is held constant or manipulated to isolate the effect of an independent variable on a dependent variable
In the experiment, temperature was used as a control variable to ensure that only the pH level affected the reaction rate.
No experimento, a temperatura foi usada como variável de controle para garantir que apenas o nível de pH afetasse a taxa de reação.
2. A variable that researchers account for and regulate to minimize its influence on the experimental outcome
Lighting conditions served as a control variable in the psychological study about attention span.
As condições de iluminação serviram como variável de controle no estudo psicológico sobre span de atenção.
This is a technical term used primarily in academic and scientific contexts in both Brazil and the United States. It is essential terminology in experimental methodology, statistics, and research design courses. The concept is foundational in the scientific method and is taught universally in higher education institutions across both countries.
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