why are residuals in generalized least squares can a regression model have non-correlated residuals what is gls regression when is residuals from a linear model white noise can you get non-correlated residuals from simple generalised least squares what is gls for what is gls in nlme why does linear regression use non correlated residuals what is the difference between gls and a linear model does gls show independent errors what is the structure of a residuals in a regression model when do we need to adjust the residuals from a linear model what are residuals of a linear model what is residual white noise from a linear model what is regression gls why residuals are white noise is r gls independent does r have linear residuals why does regression have non correlated errors how to fit residual in graph r