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A modified rang (R) chart to monitor process dispersion of autocorrelated data

Singh, Sukhraj; Prajapati, D. R. - In: International journal of productivity and quality … 13 (2014) 1, pp. 67-88

Persistent link: https://www.econbiz.de/10010360067

Detection of shift in process mean with X chart for autocorrelated data

Singh, Sukhraj; Prajapati, D. R. - In: International journal of quality & reliability management 30 (2013) 7, pp. 765-779

Persistent link: https://www.econbiz.de/10009788881

Modified chart with optimized ARLs in autocorrelated processes

Prajapati, D. R.; Singh, Sukhraj - In: The TQM journal : the international review of … 27 (2015) 5, pp. 633-647

Persistent link: https://www.econbiz.de/10011443179

Effect of warning limits on the performance of the X chart under autocorrelation

Singh, Sukhraj; Prajapati, D. R. - In: International journal of productivity and quality … 13 (2014) 2, pp. 235-250

Persistent link: https://www.econbiz.de/10010387722

Detection of shift in process mean with X¯ chart for autocorrelated data

Singh, Sukhraj; Prajapati, D.R. - In: International Journal of Quality & Reliability Management 30 (2013) 7, pp. 765-779

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 of the chart at the...

Persistent link: https://www.econbiz.de/10014802365

Performance of CUSUM and EWMA charts for serial correlation

Singh, Sukhraj; Prajapati, D.R. - In: The TQM Journal 25 (2013) 3, pp. 309-324

Purpose – The purpose of this paper is to study the effect of correlation on the performance of CUSUM and EWMA charts. The performance of the CUSUM and EWMA charts is measured in terms of average run lengths (ARLs) for the positively correlated data. The ARLs at various set of parameters of...

Persistent link: https://www.econbiz.de/10015032031

Modified chart with optimized ARLs in autocorrelated processes

Prajapati, D. R.; Singh, Sukhraj - In: The TQM Journal 27 (2015) 5, pp. 633-647

Purpose – The purpose of this paper is to counter autocorrelation by designing the chart, using warning limits. Various optimal schemes of modified chart are proposed for various sample sizes ( n ) at levels of correlation (Φ) of 0.00, 0.475 and 0.95. These optimal schemes of modified chart...

Persistent link: https://www.econbiz.de/10015032294

Effect of autocorrelation on the performance of EWMA chart

Singh, Sukhraj; Prajapati, D. R. - In: International journal of productivity and quality … 9 (2012) 2, pp. 177-193

Persistent link: https://www.econbiz.de/10009502828

Statistical design of X charts for autocorrelated processes for different sample sizes

Prajapati, D. R.; Singh, Sukhraj - In: International journal of productivity and quality … 14 (2014) 4, pp. 387-407

Persistent link: https://www.econbiz.de/10011283356

Monitoring of process mean and variance simultaneously by joint X and R chart for serial correlation

Prajapati, D. R.; Singh, Sukhraj - In: International journal of productivity and quality … 16 (2015) 1, pp. 70-91

Persistent link: https://www.econbiz.de/10011376620