Acceptance sampling is widely used in mass production.

Acceptance sampling is a quality control procedure, which uses the inspection of small samples instead of 100 percent inspection in making the decision to accept or reject much larger quantities, called a lot. This is a statistical procedure, which uses random samples, that is, each item in the lot has an equal chance of being a part of the sample that is inspected.

In its simplest form, If the sample from a larger lot has an acceptable level of defects, it will be accepted. If not, the entire lot will be rejected.

Value analysis is an approach to improving the value of a product or process by understanding its constituent components and their associated costs. It then seeks to find improvements to the components by either reducing their cost or increasing the value of the functions. The technique of value analysis can be applied to any item.