المستخلص: |
This paper is mainly an overview paper that demonstrates some historical issues of the process capability problem. A detailed statistical discussion of the main important early results is launched, by recalling Shewhart’s pioneering work, as well as some other productive papers. A representation of some extended views is also provided including an improved numerical new findings. Some concluding remarks are given on which a numerical investigation is conducted to reflect the real state of the process capability of the statistically analyzed data. Suggestions for future researches are also explored by implementing some advanced statistical concepts for refining a set of data, and highlighting a prospective “predictive dimension” for the analysis of the process “future” performance.
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