Monitoring the coefficient of variation: A literature review
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 …
considered as in-control and the process standard deviation is a linear function of the …
An improved process monitoring by mixed multivariate memory control charts: An application in wind turbine field
Memory control chart such as multivariate CUSUM (MCUSUM) and multivariate EWMA
(MEWMA) control charts are considered superior for the detection of small-to-moderate …
(MEWMA) control charts are considered superior for the detection of small-to-moderate …
[HTML][HTML] A generally weighted moving average control chart for monitoring the coefficient of variation
R Chen, Z Li, J Zhang - Applied Mathematical Modelling, 2019 - Elsevier
This paper proposes a generally weighted moving average control chart with adjusted time-
varying control limits for monitoring the coefficient of variation of a normally distributed …
varying control limits for monitoring the coefficient of variation of a normally distributed …
Variable sample size and sampling interval (VSSI) and variable parameters (VP) run sum charts for the coefficient of variation
This paper improves the sensitivity of the existing run sum chart for shifts in the coefficient of
variation γ by proposing two types of adaptive schemes, ie the variable sample size and …
variation γ by proposing two types of adaptive schemes, ie the variable sample size and …
A variable sampling plan based on the coefficient of variation for lots resubmission
This study focuses on the issue of lots resubmission in inspection processes, which often
arises when the initial inspection of a lot is suspected, marked as held, or not accepted. To …
arises when the initial inspection of a lot is suspected, marked as held, or not accepted. To …
[PDF][PDF] A Bayesian approach for estimation of coefficients of variation of normal distributions
The coefficient of variation is widely used as a measure of data precision. Confidence
intervals for a single coefficient of variation when the data follow a normal distribution that is …
intervals for a single coefficient of variation when the data follow a normal distribution that is …
Effect of measurement errors on the performance of coefficient of variation chart with short production runs
This paper investigates the performance of the coefficient of variation chart in the presence
of measurement errors for finite production horizon. We study a two-sided Shewhart …
of measurement errors for finite production horizon. We study a two-sided Shewhart …
Efficient monitoring of coefficient of variation with an application to chemical reactor process
Control chart is a useful tool to monitor the performance of the industrial or production
processes. Control charts are mostly adopted to detect unfavorable variations in process …
processes. Control charts are mostly adopted to detect unfavorable variations in process …
Optimal design of adaptive EWMA monitoring schemes for the coefficient of variation and performance evaluation with measurement errors
S Zhang, X Hu, J Wang, P Zhou, X Ren - Computers & Industrial …, 2024 - Elsevier
The coefficient of variation (CV) usually describes the relative dispersion in production or
service processes and has been widely applied in various fields. Monitoring the CV has …
service processes and has been widely applied in various fields. Monitoring the CV has …
Efficiency evaluation of cultural services in the Czech Republic via multi-criteria decision analysis
Culture is an irreplaceable means of transferring information between generations. The
development of culture, the cultural environment, and the effect of culture exist over the long …
development of culture, the cultural environment, and the effect of culture exist over the long …