Comparar métodos

	Teste de Breusch-Pagan para Heteroscedasticidade	Teste de White para Heteroscedasticidade
Área	Econometria	Econometria
Família	Regression model	Regression model
Ano de origem	1979	1980
Autor original	Trevor Breusch & Adrian Pagan	Halbert White
Tipo	Lagrange-multiplier test for heteroskedasticity	General test for heteroskedasticity
Fonte seminal	Breusch, T. S., & Pagan, A. R. (1979). A simple test for heteroscedasticity and random coefficient variation. Econometrica, 47(5), 1287–1294.	White, H. (1980). A heteroskedasticity-consistent covariance matrix estimator and a direct test for heteroskedasticity. Econometrica, 48(4), 817–838.
Outros nomes	BP test, Breusch-Pagan-Godfrey test, Lagrange multiplier test for heteroskedasticity, Breusch-Pagan değişen varyans testi	White's general heteroskedasticity test, White değişen varyans testi
Relacionados	3	3
Resumo	The Breusch-Pagan test, introduced by Trevor Breusch and Adrian Pagan in 1979, is a Lagrange-multiplier test for heteroskedasticity — the condition where the variance of a regression's errors changes with the explanatory variables. It works by regressing the squared OLS residuals on candidate variables and checking whether they explain any of the residual variation, signalling that the constant-variance assumption is violated.	The White test, introduced by Halbert White in 1980, is a general test for heteroskedasticity that makes no assumption about its functional form. It regresses the squared OLS residuals on the regressors, their squares, and their cross-products, so it can detect heteroskedasticity related to any of these terms. The same 1980 paper introduced the heteroskedasticity-consistent ('White') standard errors that are the standard remedy when the test rejects.