Edward G. Schilling

The Effect of Non-Normality on the Control Limits of X-Bar Charts

The setting of limits on X-bar control charts, as well as other techniques employed in industrial statistics, are based on an assumption of normality justified by the central limit theorem. The theorem essentially states that, under general conditions, ..

A Systematic Approach to the Analysis of Means, Part I. Analysis of Treatment Effects

The analysis of means is a method for the graphical analysis of the means resulting from a designed experiment. The basic procedure was developed by Dr. E.R. Ott of Rutgers University. This series is an extension of the Ott procedure in that: Part I pro..

A Lot Sensitive Sampling Plan for Compliance Testing and Acceptance Inspection

An acceptance sampling plan is presented that is applicable in general acceptance sampling and is particularly useful in compliance and safety-related testing. It provides for rejection of the lot if any defective items are found in the sample; a well-d..

Tables for the Construction of Matched Single, Double, and Multiple Sampling Plans with Application to MIL-STD-105D

Tables are presented for the construction and evaluation of matched sets of single, double, and multiple sampling plans. They may be used to derive two-point individual plans to meet specified values of fraction defective and probability of acceptance. ..

The Performance of MIL-STD-105D Under the Switching Rules: Part 1: Evaluation

MIL-STD-105D is a sampling scheme. As such, switching from normal to tightened or reduced plans must be utilized to effect optimum protection. Unfortunately, the standard itself presents tables of operating characteristics and other measures for individ..

Two-Point Optimal Narrow Limit Plans with Applications to MIL-STD-105D

Narrow limit gauging combines the ease of attributes inspection with the power of variables sampling to reduce sample size. Tables of narrow limit plans that have two fixed points on the operating characteristic curve and are optimal in terms of minimum..

GRASP: A General Routine for Attribute Sampling Plan Evaluation

A FORTRAN computer program is presented that will evaluate an arbitrary single, double, or multiple sampling plan using hypergeometric, binomial, Poisson, or normal probabilities. An option is also included that will permit the calculation of the fracti..

A Systematic Approach to the Analysis of Means: Part II. Analysis of Contrasts

The analysis of means is a method for the graphical analysis of the means resulting from a designed experiment. The basic procedure was developed by Dr. E.R. Ott of Rutgers University. This series is an extension of the Ott procedure in that: Part I pro..

A FORTRAN Computer Program for Analysis of Variance and Analysis of Means

A FORTRAN computer program is presented which provides the analysis of variance table complete with expected mean squares and an analysis of means plot for the treatment effects for any balanced experiment design of up to seven factors...

A Simplified Graphical Grand Lot Acceptance Sampling Procedure

Acceptance inspection and compliance testing often require levels of protection for both the consumer and the producer that make for large sample size relative to lot size. A given sample size can, however, be made to apply to several lots jointly if th..