Acceptance sampling

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Acceptance sampling

  1. 1. Acceptance sampling
  2. 2.  Form of inspection applied to lots of items either before or after a process instead of during the process.  Purpose is to decide whether a lot satisfies predetermined standards.  Lots that satisfy these standards are passed or accepted and others rejected.  Conditions: Large no. of items processed in a short time  Cost consequences of passing defectives are low  Destructive testing is required  Fatigue & boredom caused by inspecting large no of items leads to inspection errors
  3. 3.  Can be applied to both attribute and variable     inspection. Sampling Plan- specify the lot size, sample size, no. of samples to be taken and acceptance/rejection criteria. Single sampling plan-one random sample drawn from each lot Every item in sample is examined and said to be good/defective. Lot is rejected if sample defectives>specified.
  4. 4. Double Sampling Plan

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