serial correlation
[/ˈsɪəriəl kəˈreɪʃən/]
nounpl: serial correlations
autocorrelação
1. A statistical phenomenon where values in a time series are correlated with their own lagged values, violating the assumption of independence between observations
The economist detected serial correlation in the residuals of her regression model, suggesting that past values influence future values.
O economista detectou autocorrelação nos resíduos de seu modelo de regressão, sugerindo que valores passados influenciam valores futuros.
2. In econometrics and statistics, the situation where error terms in a regression are not independent but related to each other across time periods
Serial correlation can lead to biased standard errors and invalid hypothesis tests if not properly addressed.
A autocorrelação pode levar a erros padrão enviesados e testes de hipótese inválidos se não forem adequadamente tratados.
Serial correlation is a fundamental concept in econometrics and time series analysis, widely taught in Brazilian and Portuguese universities in advanced statistics and economics courses. The term autocorrelação has become standardized in both Brazilian and European Portuguese academic contexts, reflecting the international nature of statistical and econometric research. Understanding and addressing serial correlation is critical in applied econometric work across both countries.
Related Idioms & Phrases
to test for serial correlation
to detect serial correlation in residuals
to correct for serial correlation
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