Routliers

Detecting outliers using robust methods, i.e. the Median Absolute Deviation (MAD) for univariate outliers; Leys, Ley, Klein, Bernard, & Licata (2013) doi:10.1016/j.jesp.2013.03.013 and the Mahalanobis-Minimum Covariance Determinant (MMCD) for multivariate outliers; Leys, C., Klein, O., Dominicy, Y. & Ley, C. (2018) doi:10.1016/j.jesp.2017.09.011. There is also the more known but less robust Mahalanobis distance method, only for comparison purposes.