控制图的虚发警报的概率
在培训材料上看到以下判异准则,与我们常用的8项不太一样,请问各位朋友见过这4条的标准出处在哪?
7 points in a row on one side of the average.
7 points in a row that are consistently increasing or decreasing.
More than 2/3 of the points lie close to the process average.
Fewer than 2/3 of the points lie close to the process average.
另外:
针对于连续7点在中心线同一侧,与9点(0.3906%)比较那个虚发警报的概率更小?
联系7点上升或下降,与6点(0.2733%)哪个更小?
是不是虚发警报的概率越小越好?
7 points in a row on one side of the average.
7 points in a row that are consistently increasing or decreasing.
More than 2/3 of the points lie close to the process average.
Fewer than 2/3 of the points lie close to the process average.
另外:
针对于连续7点在中心线同一侧,与9点(0.3906%)比较那个虚发警报的概率更小?
联系7点上升或下降,与6点(0.2733%)哪个更小?
是不是虚发警报的概率越小越好?
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permedia3 (威望:1) 在校学生 员工
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2.7点
3,不是,关于阿尔法和贝塔风险的概念,记得是要增加抽样减少风险而并不是越低越好的。