Why have companies traditionally used control charts with 3-sigma limits instead of 2-sigma limits?

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Operations Management Creating Value Along the Supply Chain

ISBN: 978-0470525906

7th Edition

Authors: Roberta S. Russell, Bernard W. Taylor

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Question Posted: Oct 03, 2012 07:38 AM

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Why have companies traditionally used control charts with 3-sigma limits instead of 2-sigma limits?

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Management usually selects 3sigma limits because if the process is ...View the full answer

Operations Management Creating Value Along the Supply Chain

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