When using control charts to monitor a process, why is it necessary to include an x chart

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When using control charts to monitor a process, why is it necessary to include an x chart and an R chart? Why can’t we use just one of those control charts?

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Elementary Statistics

ISBN: 9780321836960

12th Edition

Authors: Mario F. Triola

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Question Posted: May 03, 2015 09:25 AM

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When using control charts to monitor a process, why is it necessary to include an x chart

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To use an chart without an R chart is to ignore variation and amounts of variation that are ...View the full answer

Elementary Statistics

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