Which of the following process changes cannot be detected with a process control chart?
A) The process average is trending up or down from normal.
B) The process average has shifted up or down from normal.
C) The process is behaving in such a manner that the existing variation is not random in nature.
D) All of the above.

Question

Quizplus · Accepted Answer

Process control charts are designed to detect all types of changes mentioned: trends, shifts, and non-random behavior in process variation. Therefore, none of the options A, B, or C are correct because all these changes can indeed be detected with a process control chart.

Which of the Following Process Changes Cannot Be Detected with a Process