Operating Characteristic Curve
Meaning ~ Graphical representation shows the batch acceptance probability across various defect levels to help buyers select sampling plans that balance cost and risk.
Discrimination Power
Meaning
Statistical sensitivity measure assessing the ability of a sampling plan to distinguish between good and bad lots reliably. High discrimination power allows an inspector to reject a lot just above the limit while accepting one just below it with minimal error. This specific capability depends heavily on the slope of the operating characteristic curve defined in the plan specifications.
Boundary Clarity
Plans with poor discrimination power suffer from a wide zone where pass or fail results become unpredictable. Improving this metric requires either larger sample sizes or more advanced measurement equipment with lower internal variance. Clarity here reduces the number of expensive arguments between the shipping dock and the receiver.
Efficiency Target
Operators strive to hit the correct balance between speed and precision to keep inventory moving fast. High discrimination power protects the buyer from subtle quality creep that gradually erodes the performance of the components. Without this precision, the inspection process feels random to the personnel on the floor.
Outcome Reliability
Consistent decisions based on sound data create trust within the whole supply chain. Measuring this capability ensures that the quality program identifies the exact point where a lot becomes unacceptable. This rigor maintains standard intervals between different batches.