Statistical test limits set from the distribution of good parts, used to reject parts that pass specification limits but behave unusually and may fail early.
Test Work product in the Automotive and safety-critical lifecycle
Automotive customers expect very low defect levels, and outlier screening removes parts that pass specification limits yet behave unusually and are more likely to fail early. Without it latent defects reach vehicles; with poorly chosen limits, good parts are scrapped and yield falls for no quality gain.
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