... on the average run length (ARL) and third is to include real life examples for application purpose of the proposed attribute control chart. Design/methodology/approach (1) Select a random sample of size n from each subgroup from the production process and put them on a test for specified time t, where t...

... simulations are conducted for various combinations of percentiles, false-alarm rates and sample sizes to evaluate the in-control performance of the proposed bootstrap control charts in terms of average run lengths (ARL). The out-of-control behavior and performance of the proposed bootstrap percentile chart...

... chart Pearson residuals Negative binomial regression Average run length EWMA Currently, control charts are being widely used in various areas, one of them is public health surveillance (Woodall, 2006 ; Neuburger et al., 2017). One of the purposes of the public policies of many...

.... In referring to control chart performance, in the literature, it has been evaluated using indicators that were derived from the run-length (RL). These indicators include the average run length (ARL), the standard deviation run length (SDRL) and the median run length (MRL) (Khoo et al., 2015 ; Borror...

... performance is compared with the existing charts in the literature by using the average run-length as the performance measure. Application examples from the petroleum and bottling industry are also presented for practical considerations. The comparison shows that the PMEWMA chart is quicker in detecting small...

... chart has ability to detect shift in the process and it is superior than existing chart in terms of average run length (ARL). Research limitations/implications The design and implementation of the proposed control chart on a real data shows that it can be applied in several industries...

.../methodology/approach The algorithm for the implementation of the proposed chart is developed and the formulae for the in-control and out-of-control average run lengths (ARLs) are derived. Tables of ARLs are presented for various process mean shift. The performance of the proposed chart is investigated...

...Sukhraj Singh; D.R. Prajapati Purpose The purpose of this paper is to study the performance of the X‐bar chart on the basis of average run lengths (ARLs) for the positively correlated data. The ARLs at various sets of parameters of the X‐bar chart are computed by simulation. The performance...

...D.R. Prajapati Purpose The concept of the proposed R chart is based on the sum of chi squares (χ²). The average run lengths (ARLs) of the proposed R chart are computed and compared with the ARLs of a standard R chart, Shewhart variance chart proposed by Chang and Gan, a CUSUM...

.... The performance characteristic of a control chart is measured in terms of average run length (ARL). The average run length is the average number of observations after which the control chart is likely to give a signal. If a process is in control a signal is called a false alarm. If a process is out of control...

... to departures from normality and the presence of outliers. Statistical process control Median Average run length © Emerald Group Publishing Limited 2009 Howell (1949) proposed to use the midrange as a measure of location and range as a measure of scale for subgroups in order to determine...

... a process is introduced in which the observations can be modelled as a first‐order autoregressive process with a random error. Using simulation, the average run lengths (ARLs) of control schemes are compared. Findings The results showed that the GWMA control chart of observations requires less time...

... CUSUM value. The action limits for the two metrics are numerically identical. The name twin metric emphasizes this identity. Twin metric responsiveness, measured in terms of the average run length (ARL) curve, is several times better than Shewhart control, with or without runs rules to supplement...