restriction of range
[/rɪˈstrɪkʃən əv reɪndʒ/]
nounpl: restrictions of range
restrição de amplitude
1. A statistical phenomenon where the variability of a variable is reduced or limited, typically due to selective sampling or measurement constraints, which can artificially lower correlations and affect statistical analysis
The restriction of range in test scores prevented the researcher from observing the true correlation between aptitude and performance.
A restrição de amplitude nos escores do teste impediu o pesquisador de observar a verdadeira correlação entre aptidão e desempenho.
2. In psychological or educational testing, the limitation of the full spectrum of individual differences, often occurring when only a subset of the population is assessed
Due to restriction of range, the validity coefficients were lower than expected in the sample of top performers only.
Devido à restrição de amplitude, os coeficientes de validade foram mais baixos do que o esperado na amostra contendo apenas os melhores desempenhos.
This term is primarily used in academic and research contexts in both Brazil and the USA. It is a technical concept in statistics, psychometrics, and educational assessment, frequently encountered in graduate-level courses and research publications. Brazilian universities teaching research methodology emphasize this concept to ensure students understand its impact on statistical inferences.
Look up more words on Fala2Me
The free English-Portuguese dictionary with real Brazilian accents, NYC slang, conjugator and more
Open Fala2Me →