Minimum Samples for DFM discussion

Bev D said:

A few things to remember:

1. If a biased sample (anything other than above) doesn't exhibit capability - the process isn't capable. Although you won't know what percentage may be out of spec until 1 above is done...
2. However the opposite is NOT true: a biased sample that is all in spec doesn't mean that the process is capable. If you haven't sampled from the extremes of the allowed inputs. It can tell you that the sampled input conditions are capable but that is usually a very restrictive input range.

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