Multiple Choice
Quality control charts usually have a central line and upper and lower control limit lines. Which of the following is not a reason that the process being monitored with the chart should be investigated?
A) A large number of plots are close to the upper or lower control lines.
B) The behavior of the plots is erratic.
C) A single point falls above or below the control limits.
D) There is a change in raw materials or operators.
E) There is a run of five above the central line.
Correct Answer:
Verified
Correct Answer:
Verified
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