We provide an overview and perspective on the Phase I collection and analysis of data for
use in process improvement and control charting. In Phase I, the focus is on understanding …

Statistical process control plays a key role in today's highly competitive industrial
environment since it allows quality practitioners to timely detect out‐of‐control situations and …

In this paper, we propose a mixed control chart to monitor the process quality using attribute
data combined with variable data. The proposed control chart proceeds like an np control …

New control charts under repetitive sampling are proposed, which can be used for variables
and attributes quality characteristics. The proposed control charts have inner and outer …

The control chart based on mean deviation (MD) is customary used as a robust alternative to
the existing Shewhart control charts for observing changes in dispersion parameter of the …

The main aim of this article is to review and discuss two particular topics of statistical process
monitoring: the need for a nonparametric approach to Phase I analysis and the use of …

Several recent studies have shown that the number of Phase I samples required for a Phase
II control chart with estimated parameters to perform properly may be prohibitively high …

When designing control charts the in‐control parameters are unknown, so the control limits
have to be estimated using a Phase I reference sample. To evaluate the in‐control …

Process monitoring through control charts is a quite popular practice in statistical process
control. From a statistical point of view, a superior control chart is the one which has an …

This paper presents a study of a new procedure, which is based on integrating a powerful
nonparametric test for the two-sample problem and EWMA control scheme to online …