why do we run a d dickey panga test on residuals what would a cointegration test detect is cointegration the same as heteroskedasticity what's the opposite of cointegration testing? is a white test the same as a heteroskedasticity test what is the same as heteroskedasticity test is heteroskedasticity the same as cointegration what testing is done to check the variance of the residual errors of a regression equation which test is same as a heteroskedasticity test? why would cointegration tests be performed what is a breusch-pagan test for why is a white test the same as heteroskedasticity what is the purpose of a homoskedastic test what's the difference between a heteroskedastic regression and a cointegration regression why is heteroskedasticity tested is heteroskedasticity same as residual error is it the same as cointegration for heteroskedasticity does heteroskedasticity show variability what is the test for heteroskedasticity what is the difference between a cointegration test and a heteroskedastic regression test