what is the residual standard error for zivot's andrews is zivot andrews unit root test true what unit does zivot & andrews use residual standard error zivot zivot andrews unit root test what is the residual standard error of zivot and andrews? what does unit root test indicate what are the residuals for zivot and andrews what is the residuals in zivot what is the range of residuals for model is andrews unit root test valid what is the unit for the unit root test? what is the residual of a linear regression in zivot and andrews? how to interpret andrews test what is the residual for a unit root test how to interpret zivot and andrews unit root test how to interpret the residuals which unit is the earliest unit for interpreting a residual test? how to interpret zivot and andrews unit root test what is the residual standard error?