Economic design of X̄ and R charts under
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Antonio F. B. Costa; M. A. Rahim
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Article
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2000
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John Wiley and Sons
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English
⚖ 139 KB
This paper considers the problem of a continuous production process where both the mean and variance are simultaneously monitored by an X chart and R chart respectively, and generalizes the model of Costa (IIE Transactions 1993; 25(6):27-33). The product variable quality characteristic is assumed to