Paper Title:
Practical Economic Statistical Design of ̅X Chart
  Abstract

This paper developed an understandable economic mathematical model of total cost of quality related to the use of control chart. This model considers both statistical quality and cost criteria. The statistical quality constraints considered in this paper are type I error (α) and type II error (β). The total cost of quality is a function of sample size (n) and sampling frequency (f). The model of total cost can be optimized to determine values of n and f that minimize the total cost of quality, while quality level is satisfied. The model can be solved by common spreadsheet program. The economic statistical model is developed under the real situation of a case study company to make the model realistic.

  Info
Periodical
Chapter
Chapter 5: Engineering Management
Edited by
Elwin Mao and Linli Xu
Pages
381-386
DOI
10.4028/www.scientific.net/AEF.1.381
Citation
N. Rojanarowan, N. Punyasiri, "Practical Economic Statistical Design of ̅X Chart", Advanced Engineering Forum, Vol. 1, pp. 381-386, 2011
Online since
September 2011
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