Harold F. Dodge in 1945 defined an acceptance sampling plan, CSP-1, for inspecting a continuous sequence of units or lots which are outputs from a process operating in statistical control. The plan is to guarantee there will be a maximum average percent of nonconforming units in the inspected units equal to a selected Average Outgoing Quality Limit (AOQL). For twenty-six plans investigated when process conditions differ from those of Dodge, the average percent nonconforming only in a finite number of units inspected will be less than or equal to the AOQL of Dodge. Also, when the process percent nonconforming is changing according to certain patterns investigated, the average percent passing inspections will be practically no larger than the AOQL under Dodge assumptions.

Providing valuable guidelines for choosing appropriate procedures, this comprehensive second edition lucidly presents a broad theoretical understanding of the field while offering all the information needed for the practical application of acceptance sampling plans in industry.

This edition contains background on acceptance sampling, a review of the various types of plans, and formulation of nine specific sampling plans. It also features several new developments in continuous sampling plan procedures and evaluations.Contents:Basic Elements of a Sampling Plan Evaluation of the Performance of Sampling Plans Quality Level Indexing Types of Sampling Plans Attributes and Variables of Data and Sampling Plans Single, Double, Multiple, and Sequential Sampling Plans Lot by Lot Sampling Nomographs and Their Use Sampling Tables and Their Use