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How does the process capability ratio (CP) vary with the number of defective parts per million?

How does the process capability ratio (CP) vary with the number of defective parts per million? Correct Answer Inversely proportional

When the process capability ratio (CP) increases, the number of defective parts per million decreases significantly. For CP = 1, there exist 2700 defects per million outside the specification limits and when CP = 2, there will be 0.003 parts per million outside the specification limits. Hence, CP varies indirectly with the number of defective parts per million.

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