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

All the described situations suggest a process that is operating out of statistical control. Consecutive points consistently above or below the center line, points falling outside the lower control limit, and several points outside the upper control limit all indicate potential issues with process stability or control.

Which of the Following Situations Suggests a Process That Appears