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Regret Indices and Capability Quantification

Tang, and Tom Hsiang. My thanks also go to Bill Houston and Jan Gipe of Bellcore who got me started writing graphical training-aids and system prototypes for IBM-compatible personal computers. I wish to thank Ray Starrett and Ron Bobbie of Glaxo pharmaceuticals with whom I worked on environmental contaminant counting applications in 1988-1989. I am also indebted to Bill Grosse of Eli Lilly for suggesting I work on process capability methodology and to Don Gonzales and Paul Haiber of Eli Lilly for help in preparing my seminars and collecting the fill-volumes data.

Appendii: Personal Computer Software

An archive of capability quantification software, CAPQNT.EXE, for IBM-compatible personal computers is available from the author or can be down-loaded from CompuServe IBMAPP Library 13 (Tech/Engr/Sci). This software provides a user-friendly menus/prompts interface for generating five types of CGA medium-resolution graphical displays: [i] P-P probability plots (with Kolmogorov-Smimov statistics) for Poisson approximations; [ii] Q-Q probability plots of gamma distribution order-statistics; [iii] CC curves (both observed and Poisson-smoothed); [iv] CC curve confidence limits, and; [v] CC curves for process improvement monitoring as described above. In addition to screen dumps to a slave printer such as those of Figures 9, 12, 13 and 14, the software also offers an "interactive" modÄ™ in which the user moves an on-screen cursor to read numerical values directly off of the graphics screen.

References

American National Standard Ansi/Asqc Al-1987. "Definitions, Symbols, Formulas, and Tables for Control Charts." Milwaukee, WI: American Society for Quality Control.

At&T Statistical Quality Control Handbook (1956). Charlotte, NC: Delmar Printing Company.

Bellcore (1986). "Introduction To Quality Trend Charts." (18 page booklet.) Red Bank, NJ: Bell Communications Research.

Bellcore (1987). "The Quality Measurement Plan (QMP)." Technical Reference TR-TSY-000438. Red Bank, NJ: Bell Communications Research.