Monitoring process variability using auxiliary information

@inproceedings{Riaz2008MonitoringPV,
title={Monitoring process variability using auxiliary information},
author={Riaz},
year={2008}
}

Riaz

Published 2008

In this study a Shewhart type control chart namely Vr chart is proposed for improved monitoring of process variability (targeting large shifts) of a quality characteristic of interest Y . The proposed control chart is based on regression type estimator of variance using a single auxiliary variable X . It is assumed that (Y, X) follow a bivariate normal distribution. The design structure of Vr chart is developed and its comparison is made with the well-known Shewhart control chart namely S2… CONTINUE READING