Accession Number : AD0649857

Title :   EVALUATION OF RESPONSE CHARACTERISTICS OF CHAIN SAMPLING INSPECTION PLANS.

Descriptive Note : Technical rept.,

Corporate Author : RUTGERS - THE STATE UNIV NEW BRUNSWICK N J STATISTICS CENTER

Personal Author(s) : Stephens,Kenneth S. ; Dodge,Harold F.

Report Date : MAR 1967

Pagination or Media Count : 53

Abstract : This report gives an evaluation of Chain Sampling Inspection Plans pertaining to response characteristics, i.e., their ability to respond to an abrupt change in the process fraction defective, p. Average run length (ARL) is used as a measure of the response. The process model and a number of ARL's of different type are defined; a general derivation of ARL is given; and the ARL's and a number of contrasts between these ARL's are obtained and discussed to compare ChSP plans with non-cumulative plans as well as among themselves. The gain in inspection efficiency (reduction in average sample size, ASN) for two-stage chain sampling plans appears to be promising compared with the extra lag in detecting process changes that results from the use of the cumulative procedure.

Descriptors :   (*QUALITY CONTROL, STATISTICAL ANALYSIS), (*SAMPLING, QUALITY CONTROL), PROBABILITY, PRODUCTION CONTROL, STOCHASTIC PROCESSES, MATRICES(MATHEMATICS), TRANSFORMATIONS(MATHEMATICS)

Subject Categories : Statistics and Probability
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE