matched sample
[ˈmætʃt ˈsæmpəl]
nounpl: matched samples
amostra pareada
1. In statistics and research, a sample where subjects or observations are deliberately paired or grouped based on similar characteristics to control for confounding variables and improve the validity of comparisons
The researcher used a matched sample design, pairing participants with similar age and education levels to study the effect of the new medication.
O pesquisador utilizou um desenho de amostra pareada, emparelhando participantes com idade e nível de educação similares para estudar o efeito do novo medicamento.
2. A statistical technique where experimental and control groups contain subjects with equivalent characteristics to reduce bias and isolate the effect of the independent variable
By using matched samples in the clinical trial, the team could better isolate the treatment's actual effects from other variables.
Ao usar amostras pareadas no ensaio clínico, a equipe pôde melhor isolar os efeitos reais do tratamento de outras variáveis.
This term is primarily used in academic, medical, and scientific research contexts. It is fundamental to research methodology courses in Brazilian universities and is essential terminology for anyone conducting or reading empirical studies. The concept reflects the scientific emphasis on rigorous experimental design to ensure valid conclusions.
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