Control charts can be applied in a wide range of areas, this paper focuses on generalisations suitable for healthcare applications. We concentrate on the effect of using mixture distributions as the possible shifts in the process mean value. We give a closed formula for the expected squared deviation from the target value between samplings. This observation can be utilised in finding the cost-optimal parameters of the control chart.

翻译：控制图表可以应用于广泛的领域,本文件侧重于适合医疗应用的概括性。我们集中关注使用混合物分布作为过程平均值可能变化的影响。我们给出一个封闭的公式,用于预期在抽样之间偏离目标值的正方形。这一观察可用于寻找控制图表的成本最佳参数。