non-representative section
[/nɑn ˌrɛprɪˈzɛntətɪv ˈsɛkʃən/]
nounpl: non-representative sections
seção não representativa
1. A sample or portion of a larger group that does not accurately reflect the characteristics, proportions, or qualities of the whole population or material
The survey results were based on a non-representative section of the population, skewing the data toward urban residents.
Os resultados da pesquisa foram baseados em uma seção não representativa da população, distorcendo os dados em favor dos residentes urbanos.
2. In statistics or research, a subset that fails to maintain the same distribution or diversity as the entire dataset
The study was criticized for using a non-representative section of patients, mostly from high-income neighborhoods.
O estudo foi criticado por usar uma seção não representativa de pacientes, principalmente de bairros de alta renda.
3. In cross-sectional studies, a portion of material or population examined that does not sufficiently mirror the overall composition
The geological survey examined a non-representative section of the rock formation due to accessibility constraints.
A pesquisa geológica examinou uma seção não representativa da formação rochosa devido a restrições de acessibilidade.
This term is predominantly used in academic, statistical, and scientific contexts in both English-speaking countries and Brazil. It reflects the importance placed on scientific methodology and data validity in research communities. In Brazil, discussions about representativeness in surveys and censuses are particularly relevant given the country's social and economic diversity.
Related Idioms & Phrases
a non-representative section of the population
a non-representative cross-section
to skew results with a non-representative section
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