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Journal article
Two parameter cuscore qualty control procedures
Communications in statistics. Theory and methods, Vol.19(6), pp.2191-2205
1990
Web of Science ID: WOS:A1990ED22700013
Abstract
This paper is concerned with the problem of simultaneously monitoring the process mean and process variability of continuous production processes using combined Shewhart-cumulative score (cuscore) quality control procedures developed by Ncube and Woodall (1984). Two methods of approach are developed and their properties are investigated. One method uses two separate Shewhart-cuscore control charts, one for determining shifts in the process mean and the other for detecting shifts in process variability. The other method uses a single combined statistic which is sensitive to shifts in both the mean and the variance. Each procedure is compared to the corresponding Shewhart schemes. It will be shown by average run length calculations that the proposed Shewhart- cuscore schemes are considerably more efficient than the comparative Shewhart procedures for certain shifts in the process mean and process variability for the case when the underlying process control variable is assumed to be normally distributed.
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Details
- Title
- Two parameter cuscore qualty control procedures
- Publication Details
- Communications in statistics. Theory and methods, Vol.19(6), pp.2191-2205
- Resource Type
- Journal article
- Publisher
- Marcel Dekker, Inc
- Number of pages
- 15
- Copyright
- © Taylor & Francis
- Identifiers
- WOS:A1990ED22700013; 99380589396406600
- Academic Unit
- Hal Marcus College of Science and Engineering ; Mathematics and Statistics
- Language
- English