A process is said to be out of control if
A) a point falls above the upper or below the lower control lines.
B) eight or more consecutive points fall above the center line or eight or more consecutive points fall below the center line.
C) either of the above
D) none of the above

Question

Quizplus · Accepted Answer

A process can be considered out of control if either a point falls above the upper or below the lower control lines or if eight or more consecutive points fall above or below the center line. Therefore, the correct option is C, which includes both situations.

A Process Is Said to Be Out of Control If