Glossary

A statistical method of inspecting a sample of products to determine whether the entire lot should be accepted or rejected based on the number of defects found.

collection of products or items that are being inspected as a single unit.

A representative subset of products or items from a lot that is inspected to determine the quality of the entire lot.

The maximum percentage or number of defects that are allowed in a lot of products for it to be considered acceptable.

The degree of inspection that is required based on the size of the lot and the desired level of quality.

A sampling plan that involves inspecting a single sample of products and making a decision about the entire lot based on the results of that sample.

A sampling plan that involves inspecting two samples of products and making a decision about the entire lot based on the results of both samples.

A sampling plan that involves inspecting three or more samples of products and making a decision about the entire lot based on the results of all the samples.

A set of rules and procedures that govern the selection of a sample from a lot and the decision-making process based on the results of that sample.

Sampling Error: The difference between the actual quality of the lot and the quality of the sample, which is inherent in any sampling process.

An inspection method that involves dividing the lot into smaller groups and inspecting each group separately to identify any patterns or trends in the defects.

The maximum number of nonconforming items that are allowed in a sample before the entire lot is rejected.

The distribution of possible sample outcomes that can be used to estimate the quality of the lot.