ISO 7870-6:2016 控制图 第6部分：EWMA 控制图

标准编号：ISO 7870-6:2016

中文名称：控制图 第6部分：EWMA 控制图

英文名称：Control charts — Part 6: EWMA control charts

发布日期：2016-02

标准范围

ISO 7870-6:20 16将EWMA控制图作为一种统计过程控制技术，用于检测过程平均值的微小变化。它可以更快地检测过程平均值的小到中等变化。在此图表中，根据所有先前样本均值的指数加权移动平均值来评估过程平均值。EWMA以几何递减的顺序对样本进行加权，使得最近的样本被加权最高，而最远的样本根据平滑参数（λ）贡献很小。

ISO 7870-6:2016 covers EWMA control charts as a statistical process control technique to detect small shifts in the process mean. It makes possible the faster detection of small to moderate shifts in the process average. In this chart, the process average is evaluated in terms of exponentially weighted moving average of all prior sample means. EWMA weights samples in geometrically decreasing order so that the most recent samples are weighted most highly while the most distant samples contribute very little depending upon the smoothing parameter (λ).

标准预览图