• An enhanced nonparametric EWMA sign control chart using sequential mechanism 

      Riaz, Muhammad; Abid, Muhammad; Nazir, Hafiz Zafar; Abbasi, Saddam Akber ( Public Library of Science , 2019 , Article)
      Control charts play a significant role to monitor the performance of a process. Nonparametric control charts are helpful when the probability model of the process output is not known. In such cases, the sampling mechanism ...