There are some situations when the process mean fluctuates from time to time but is still
considered as in-control and the process standard deviation is a linear function of the …

Stock market forecasting has been a subject of interest for many researchers; the essential
market analyses can be integrated with historical stock market data to derive a set of …

Over the past decades, control charts, one of the essential tools in Statistical Process Control
(SPC), have been widely implemented in manufacturing industries as an effective approach …

The coefficient of variation (CV), a measure of relative variability, is an important quality
control issue worthy of consideration in some manufacturing and service-oriented …

Existing charts in the literature usually monitor either the mean or the variance of the
process. However, in certain scenarios, the practitioner is not interested in the changes in …

Control charts for monitoring the coefficient of variation (CV) have been receiving a lot of
attention in the literature, with numerous more powerful and robust CV charts being …

In industries, multi-variety and small batch processes are extremely common due to the fact
that the production process is moving towards flexible manufacturing to meet the increasing …

This paper aimed to develop a coefficient of variation (CV) control chart utilizing the
generalized multiple dependent state (GMDS) sampling approach for CV monitoring. We …

Continuous surveillance of the coefficient of variation is a quality control issue worthy of
consideration in several manufacturing and service‐oriented companies. In this paper, we …

Recent studies show that Shewhart-type control charts monitoring the ratio of two normal
random variables are useful to perform continuous surveillance in several manufacturing …