high variance
[/haɪ ˈvɛriəns/]
noun phrase / adjective phrase
alta variância
1. In statistics and probability, a large spread or dispersion of data points around the mean; significant fluctuations or unpredictability in outcomes
The stock market showed high variance during the economic crisis, with prices fluctuating wildly.
O mercado de ações apresentou alta variância durante a crise econômica, com preços flutuando drasticamente.
2. In machine learning and data science, a model's sensitivity to small fluctuations in the training data, often leading to overfitting
The neural network had high variance, performing well on training data but poorly on test data.
A rede neural tinha alta variância, funcionando bem nos dados de treinamento mas mal nos dados de teste.
3. In gambling or games of chance, unpredictable or volatile outcomes with significant ups and downs
Poker is considered a high variance game because results can swing dramatically in short periods.
O pôquer é considerado um jogo de alta variância porque os resultados podem variar dramaticamente em curtos períodos.
The term 'high variance' is primarily used in technical, academic, and professional contexts in both the USA and Brazil, particularly in finance, statistics, machine learning, and gambling. In Brazil, it's predominantly found in university settings and among professionals in data science and finance sectors. In the USA, it's commonly used in Wall Street finance, tech industry discussions about AI/ML models, and among poker professionals and gamblers. The concept reflects a shared understanding of risk and predictability across both English-speaking and Portuguese-speaking professional communities.
NYC Slang
all over the place; all over the map; wildly unpredictable
Related Idioms & Phrases
a roller coaster ride (describing high variance outcomes)
swing wild (describing high variance behavior)
all over the board (describing inconsistent, high variance results)
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