Is DPM defective parts per million a form of Attribute Data Sampling?

Q

qualityboi

Hi!

Is DPM defective parts per million a form of attribute data sampling? What other types of sample are there other than attribute data sampling?

Thanks!
 

Helmut Jilling

Auditor / Consultant
Hi!

Is DPM defective parts per million a form of attribute data sampling? What other types of sample are there other than attribute data sampling?

Thanks!


It is neither. DPM, or PPM is simply a statistic that says how many defect parts there are per million.

Attribute data sampling is achieved by go/no-go inspections. Variable data sampling is based on dimension compared to tolerance values. Both are inspection methods.

Defects are simply the result of either of those inspection types. 1000 PPM means out of 1,000,000 parts shipped, 1000 or 0.10% were defective. Both values are a result of inspections.
 
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