Two valuation rules apply for independent multiple samples: A valuation rule for the decisions of the individual samples and a valuation rule for a collective decision for all samples associated with the characteristic. The valuation rule, which combines the decisions for the individual samples into a collective decision for the characteristic, is defined in the sampling procedure:

The characteristic valuation can be based on the worst valid partial sample ("worst case") or on the last inspected sample ("last case"). In a worst case scenario, the inspection characteristic is accepted only if all valid partial samples are accepted. In a last case situation, the inspection characteristic is accepted only if the last inspected partial samples was accepted.