Lot Acceptance via Attributes Sampling (LAVAS) User's Guide

摘要

This user's guide describes an automation which will assist the user in thedesign and risk assessment of attributes sampling plans used in lot acceptance or for quality surveillance. This automation, entitled Lot Acceptance Via Attributes Sampling (LAVAS), provides for the construction of Operating Characteristic (OC) Curves and Average Sample Number (ASN) plots for single sampling, double sampling, multiple sampling, sequential sampling, and truncated sequential sampling plans. The OC Curves and ASN plots make exclusive use of Binomial or Hypergeometric distributions for probability calculations, depending upon the conditions of application. This probabilistic approach will increase the precision of the probability of acceptance and expected sample size to a decision since no approximation techniques, such as the Poisson and/or Normal, are used. Additionally, LAVAS provides specific design options which will expedite the design of sampling plans which are subject to risk constraints at specified quality levels.