...Shovan Chowdhury; Amarjit Kundu; Bidhan Modok Purpose As an alternative to the standard p and np charts along with their various modifications, beta control charts are used in the literature for monitoring proportion data. These charts in general use average of proportions to set...

...Sandra García-Bustos; Nadia Cárdenas-Escobar; Ana Debón; César Pincay Purpose The study aims to design a control chart based on an exponentially weighted moving average (EWMA) chart of Pearson's residuals of a model of negative binomial regression in order to detect possible anomalies in mortality...

... in-control ARL and sample size. Findings The BN model outperforms adaptive np control charts in all experiments, except for some cases where only a large change in the proportion of sample defects is relevant. The BN is particularly useful when small sample sizes are available and when managers...

... to signal and average number of false alarms for X̅ control chart under Burr XII shock model with multiple assignable causes. Findings The cost model was examined through a numerical example, with the same cost and time parameters, so the optimal of design parameters were obtained under uniform...

...Damaris Serigatto Vicentin; Brena Bezerra Silva; Isabela Piccirillo; Fernanda Campos Bueno; Pedro Carlos Oprime Purpose The purpose of this paper is to develop a monitoring multiple-stream processes control chart with a finite mixture of probability distributions in the manufacture industry...

...Olatunde Adebayo Adeoti Purpose The purpose of this paper is to propose a double exponentially weighted moving average control chart using repetitive sampling (RS-DEWMA) for a normally distributed process variable to improve the efficiency of detecting small process mean shift. Design...

... variable for the out-of-control state, and determine necessary changes to achieve the state of statistical control. Design/methodology/approach The proposed approach integrates the control chart technique, the Mahalanobis-Taguchi System concept, the Andrews function plot, and nonlinear optimization...