Paul: What is the cost of poor quality? If a defect costs the organization $0.01 and your volume is 10,000 units per year, I’d say your quality level is excessive. On the other hand, if each defect is $1,000 and you are making 100,000,000,000 per year, you probably can justify further quality improvement.
The metric is not the critical issue, it’s what the metric means to the organization that’s important.
However, that said, DPMO (I have found) is subject to gaming, as the number of opportunities is often not rigorously evaluated.
.
