|Using the operating
of the two-point oc-curve method
to develop acceptance sampling plans
- Acceptance Sampling Plan: These sampling
plans consist of a sample size and a decision rule. The sample size is the number of items
to sample or the number of measurements to take. The decision rule involves the acceptance
limit(s) and a description of how to use the sample result to accept or reject the lot.
- Design Method: To design a sampling plan
by the two-point method, the designer specifies two points on the Operating Characteristic
These two points define the acceptable and unacceptable quality levels for the purpose
of acceptance sampling. The two points also determine the risks associated with the
acceptance/rejection decision. You will fine a more thorough discussion of the methodology
in the Tutorial.
- Discrimination: The sampling plans will
require enough testing and inspection to discriminate between acceptable and unacceptable
quality levels at the probability levels that the designer selects.
- Reduce Cost: The sampling plans will save
you time and effort by using no more testing and inspection than necessary in order to
- Articulation: These sampling plans enable
you to quickly know, describe, and explain the meaning of your acceptance rules -- using
operating characteristic curves to state the probabilities and risks.
- Accuracy: We have refined the supporting software over many years of application by Quality and
Reliability Engineers, Technicians, and Consultants. In addition to sampling plan
applications, it is very suited to classroom training.
Author -- Stan Hilliard, CQE,CRE,CQA,PE