The EWMA control chart: properties and comparison with other quality-control procedures by computer simulation.
نویسنده
چکیده
A quality-control chart based on exponentially weighted moving averages (EWMA) has, in the past few years, become a popular tool for controlling inaccuracy in industrial quality control. In this paper, I explain the principles of this technique, present some numerical examples, and by computer simulation compare EWMA with other control charts currently used in clinical chemistry. The EWMA chart offers a flexible instrument for visualizing imprecision and inaccuracy and is a good alternative to other charts for detecting inaccuracy, especially where small shifts are of interest. Detection of imprecision with EWMA charts, however, requires special modification.
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ورودعنوان ژورنال:
- Clinical chemistry
دوره 43 4 شماره
صفحات -
تاریخ انتشار 1997