Control Chart For Variables With Specified Weighted Process Capability Index

Statistical Quality Control is a method of effective use of data for studying causes of variation in quality. Control Charts are used to confirm whether the process is statistically control. For measuring process performance, the four basic process capability indices Cp, Cpk, Cpm and Cpmk were developed. A weighted process capability index Cpw was introduced to unify the aforementioned capability indices. Once the process is statistically control the capability indices can be used to assess the capability of the process. This paper proposes the control chart for variables namely