Browsing by Author "Nazir, Hafiz Zafar"
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A non-parametric double homogeneously weighted moving average control chart under sign statistic
Riaz, Muhammad; Abid, Muhammad; Shabbir, Aroosa; Nazir, Hafiz Zafar; Abbas, Zameer; Abbasi, Saddam Akber... more authors ... less authors ( John Wiley and Sons Ltd , 2021 , Article)In practical situations, the underlying process distribution sometimes deviates from normality and their distribution is partially or completely unknown. In that instance, rather than staying with/depending on the conventional ... -
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 ... -
On designing efficient memory-type charts using multiple auxiliary-information
Abbas, Zameer; Nazir, Hafiz Zafar; Abbasi, Saddam Akber; Riaz, Muhammad; Xiang, Dongdong ( Taylor and Francis Ltd. , 2023 , Article)This article intends to investigate new progressive mean (MEP) charts using a single auxiliary characteristic (AMEP) and two auxiliary characteristics (TAMEP) to trace small shifts in the process mean effectively. The ...