Results 41 to 50 of about 400,823 (168)

The Cusum Median Chart for Known and Estimated Parameters

Revstat Statistical Journal, 2019
The usual CUSUM chart for the mean (CUSUM-X¯) is a chart used to quickly detect small to moderate shifts in a process. In presence of outliers, this chart is known to be more robust than other mean-based alternatives like the Shewhart mean chart but it ...
Philippe Castagliola , Fernanda Otilia Figueiredo , Petros E. Maravelakis   +2 more
doaj   +1 more source

Statistical Monitoring of Process Capability Index Having One Sided Specification Under Repetitive Sampling Using an Exact Distribution

IEEE Access, 2018
This paper proposes a control chart using repetitive sampling for monitoring process capability index having one-sided specification limit using an exact distribution.
Muhammad Aslam
doaj   +1 more source

Efficient Homogeneously Weighted Moving Average Chart for Monitoring Process Mean Using an Auxiliary Variable

IEEE Access, 2019
In this paper, we propose an efficient control chart for monitoring small shifts in a process mean for scenarios where the process variable is observed with a correlated auxiliary variable.
Nurudeen A. Adegoke, Adam N. H. Smith, Marti J. Anderson, Ridwan Adeyemi Sanusi, Matthew D. M. Pawley   +4 more
doaj   +1 more source

Attribute Control Chart Using the Repetitive Sampling Under Neutrosophic System

IEEE Access, 2019
In this paper, an attribute control chart using the repetitive sampling under the neutrosophic statistics system is discussed. The necessary measures of the proposed control chart under the neutrosophic statistics system are given.
Muhammad Aslam
doaj   +1 more source

Integral equation solutions for the average run length for monitoring shifts in the mean of a generalized seasonal ARFIMAX(P, D, Q, r)s process running on a CUSUM control chart. [PDF]

PLoS One, 2022
Areepong Y, Peerajit W.
europepmc   +1 more source

New extended exponentially weighted moving average control chart for monitoring process mean

Heliyon
In this article, we develop a new control chart based on the Exponentially Weighted Moving Average (EWMA) statistic, termed the New Extended Exponentially Weighted Moving Average (NEEWMA) statistic, designed to recognize slight changes in the process ...
Hina Javed, Muhammad Ismail, Nadia Saeed
doaj   +1 more source

Mixed Control Charts Using EWMA Statistics

IEEE Access, 2016
In this paper, two mixed control charts are designed for process monitoring when the quality characteristic of interest follows a normal distribution.
Muhammad Aslam, Nasrullah Khan, Mansour Sattam Aldosari, Chi-Hyuck Jun   +3 more
doaj   +1 more source

Empirical Bayes Prediction for an Attribute Control Chart in Quality Monitoring

IEEE Access
A control chart is a valuable statistical tool used in production process control to ensure that products meet quality standards. The c-chart, a specific type of control chart, monitors the number of nonconformities or defects in a production process ...
Yadpirun Supharakonsakun
doaj   +1 more source

New adaptive EWMA CV control chart with application to the sintering process

Scientific Reports
This research presents a new adaptive exponentially weighted moving average control chart, known as the coefficient of variation (CV) EWMA statistic to study the relative process variability.
Sadaf Ayesha, Asma Arshad, Olayan Albalawi, Aiedh Mrisi Alharthi, Muhammad Hanif, Uzma Yasmeen, Muhammad Nabi   +6 more
doaj   +1 more source

Bayesian Control Chart for Number of Defects in Production Quality Control

Mathematics
This study investigates the extension of the c-chart control chart to Bayesian methodology, utilizing the gamma distribution to establish control limits.
Yadpirun Supharakonsakun
doaj   +1 more source