Question: A control chart serves as a tool for evaluating the stability and predictability of a process. When a process operates within acceptable parameters, adjustments are

A control chart serves as a tool for evaluating the stability and predictability of a process. When a process operates within acceptable parameters, adjustments are generally deemed unnecessary. What are the conventional upper and lower control limits established for a control chart?

Group of answer choices

plus/minus 3 sigma

plus/minus 6 sigma

plus/minus 2 sigma

plus/minus 1 sigma

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