Journal article
Variable Sampling Interval Combined Shewhart–Cumulative Score Quality Control Procedure
Journal of the Royal Statistical Society: Series C (Applied Statistics), Vol.40(1), pp.1-12
1991
Abstract
A standard combined Shewhart–cumulative score quality control scheme for controlling the process mean takes samples from the process at fixed length sampling intervals. This paper proposes a modification which varies the time intervals between samples depending on what is being observed from the data. The properties of the proposed variable sampling interval combined Shewhart–cumulative score scheme are evaluated using a Markov chain approach. Results show that the scheme proposed is considerably more efficient than either the standard combined Shewhart–cumulative score chart or the standard cumulative sum chart.
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Details
- Title
- Variable Sampling Interval Combined Shewhart–Cumulative Score Quality Control Procedure
- Publication Details
- Journal of the Royal Statistical Society: Series C (Applied Statistics), Vol.40(1), pp.1-12
- Resource Type
- Journal article
- Copyright
- © 1991 Royal Statistical Society
- Identifiers
- 99380171553806600
- Academic Unit
- Mathematics and Statistics; Hal Marcus College of Science and Engineering
- Language
- English