If a single sample mean is 2.1 standard deviations above the centerline, the process is not in control.

Name: If a single sample mean is 2.1 standard deviations above the centerline, the process is not in control.
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Quizplus · Accepted Answer

Being 2.1 standard deviations above the centerline does not necessarily indicate a process is out of control; control limits are typically set at ±3 standard deviations from the centerline in statistical process control charts.

If a Single Sample Mean Is 2