Which of the following situations suggests a process that appears to be operating out of statistical control?
A) a control chart with a series of consecutive points that are above the center line and a series of consecutive points that are below the center line
B) a control chart in which points fall outside the lower control limit
C) a control chart in which several points fall outside the upper control limit
D) all of the above

Question

Quizplus · Accepted Answer

A process is considered out of statistical control if points fall outside control limits or show non-random patterns. Options B and C indicate points outside control limits, and A suggests a non-random pattern.

Which of the Following Situations Suggests a Process That Appears