Which of the following statements about process quality control is NOT true?
A)Assignable cause variation is also referred as special cause variation
B)An observation outside the control limits is an example of a special cause of variation
C)Common cause variation can be eliminated from the process by removing the potential causes
D)The control limits will include 99.74% of the population under the normal probability distribution assuming that the process is in control
E)None of the above

Question

Quizplus · Accepted Answer

Common cause variation is inherent in the process and cannot be eliminated by removing potential causes. However, it can be reduced through continuous improvement efforts.

Which of the Following Statements About Process Quality Control Is