A statistical method to decide whether a lot is accepted or rejected based on a sample instead of 100% inspection.
Acceptance sampling balances risk, speed, and inspection cost when full inspection is not practical.
Sampling plans are typically selected from AQL levels and agreed between buyer and supplier before production.
How acceptance decisions are made
Inspectors draw a sample size based on lot quantity and inspection level, then compare defects against accept/reject thresholds.
The method protects both parties by making acceptance criteria explicit before shipment decisions.
Operational impact
Consistent sampling rules reduce arguments at final inspection and improve predictability in release decisions.
It is most commonly applied during Final random inspection when shipment readiness is evaluated.
Key takeaways
- Acceptance sampling reduces inspection effort while controlling risk.
- Pre-agreed thresholds keep buyer-supplier decisions objective.