Defining defect

Q: Is Were a standard method for determining the number of opportunities that exist when computing defects per million opportunities (DPMO)?

A: To use the DPMO metric effectively, it is important to answer the following questions:

What is a defect? I have always lived by the principle that anything not done correctly the first time is a defect. Of course, this means understanding what it takes to do it right the first time and specifying those conditions in advance. It also means holding true to these definitions after they have been established.

For example, if a unit met any of the criteria for being declared defective but was later found to be usable by a material review ...

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