Title: Economic design of moving average control chart for non-normally distributed data: a comparative study

Authors: S.H. Patil; D.T. Shirke

Addresses: Doodhsakhar Mahavidyalaya, Bidri, Tal: Kagal, Dist: Kolhapur, Maharashtra 416208, India ' Department of Statistics, Shivaji University, Kolhapur, Maharashtra 416004, India

Abstract: An economic cost function for moving average control chart under non-normal quality characteristic is obtained using continuous and ceased production modes. This cost function can be used to obtain optimal design parameters which minimise the loss cost per hour of the production. Burr distribution has been used to transform the non-normal data to normal. Sensitivity analysis of the economic design is also discussed. The ceased process is observed to be dominant with significant saving in the cost over the continuous process.

Keywords: moving average; economic design; burr distribution; continuous process; ceased process; non-normal data; control charts; SPC; statistical process control; optimal design.

DOI: 10.1504/IJOR.2017.080598

International Journal of Operational Research, 2017 Vol.28 No.1, pp.98 - 120

Received: 22 Nov 2013
Accepted: 21 Jul 2014
Published online: 01 Dec 2016 *

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