A pattern test can identify an out-of-control process even if all sample points are within control limits.

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Quizplus · Accepted Answer

This is true. A pattern test looks for patterns in the data that suggest a process is out of control, even if all individual data points are within control limits. Examples of patterns that may indicate an out-of-control process include trends, cycles, and runs of data points on one side of the mean.

A Pattern Test Can Identify an Out-Of-Control Process Even If