Bivariate robust control charts for individual observations

This article introduces a novel robust Shewhart-type control chart designed for monitoring the location of a bivariate process using the Comedian and Sn Covariance estimators. The process of setting control limits for the proposed control charts is demonstrated. To evaluate the performance of the newly proposed control charts, simulations are conducted and compared against existing methods found in the current literature. Furthermore, the article discusses the application of the proposed method using real-life data.