explained variance
[ɪkˈspleɪnd ˈvɛəriəns]
noun
variância explicada
1. In statistics, the proportion of the total variance in a dependent variable that is accounted for or predicted by an independent variable or set of variables in a regression model
The explained variance of the model was 0.85, indicating that 85% of the variation in student test scores could be attributed to study hours.
A variância explicada do modelo foi 0,85, indicando que 85% da variação nas notas dos testes dos alunos poderia ser atribuída às horas de estudo.
2. A measure of how well a statistical model fits the observed data, typically expressed as a percentage or coefficient of determination (R²)
Researchers calculated the explained variance to assess whether their predictive model was effective.
Os pesquisadores calcularam a variância explicada para avaliar se seu modelo preditivo era eficaz.
This is a technical term primarily used in academic, research, and data science contexts in both Brazil and the United States. It is essential terminology in statistics courses and professional data analysis. The concept is culturally neutral and universally understood in the scientific community across English and Portuguese-speaking countries.
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