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) Erratic behavior of the plots
C) A single plot falls above or below the control limits
D) A change in raw materials or operators
E) A run of five above the central line
Correct Answer:
Verified
Correct Answer:
Verified
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