fixed effects
[FꞮKST ɪˈfɛkts]
noun
efeitos fixos
1. In statistics and econometrics, variables or parameters that are constant across observations or do not vary over time within a dataset, used in regression analysis and panel data models
The researcher used a fixed effects model to control for unobserved heterogeneity across individuals.
O pesquisador utilizou um modelo de efeitos fixos para controlar a heterogeneidade não observada entre indivíduos.
2. In experimental design, the levels of factors that are deliberately set and held constant by the researcher rather than randomly varied
Fixed effects in the analysis accounted for differences between production facilities.
Os efeitos fixos na análise explicaram as diferenças entre as unidades de produção.
This is specialized technical terminology primarily used in academic, statistical, and economic research contexts. It is not colloquial and appears mainly in research papers, textbooks, and professional statistical software documentation in both the USA and Brazil. The term is discipline-specific and requires statistical knowledge to understand.
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