Hi. I found outliers by detecting Robust Outlier analysis in unidimensional data at a time and Robust Outlier analysis in unidimensional data at a time. I wanna to prevent the influences of outliers in multiple linear regression analysis. Should I perform robust regression analysis? If so, how to do it?
Or I can detect Hats, studentized Residuals, or Cooks' D distance? If not so bad result, I can also read Standarded least Squares results. Thanks!