控制图判断规则的概率计算，请高手指点
在Minitab中对控制图有判断规则，实际上这都是些小概率事件，请高手指点一下，每条规则用概率统计时，怎么计算，特别是其中关于连续6点交互上升下降这一条，请高手指点，或发个关于这方面的文章，谢谢了！
1 point more than 3 standard deviations from center line
9 points in a row on same side of center line
6 points in a row, all increasing or all decreasing 特别是这条，请高手一定要指点呀！！
14 points in a row, alternating up and down
2 out of 3 points > 2 standard deviations from center line (same side)
4 out of 5 points > 1 standard deviation from center line (same side)
15 points in a row within 1 standard deviation of center line (either side)
8 points in a row > 1 standard deviation from center line (either side)
1 point more than 3 standard deviations from center line
9 points in a row on same side of center line
6 points in a row, all increasing or all decreasing 特别是这条，请高手一定要指点呀！！
14 points in a row, alternating up and down
2 out of 3 points > 2 standard deviations from center line (same side)
4 out of 5 points > 1 standard deviation from center line (same side)
15 points in a row within 1 standard deviation of center line (either side)
8 points in a row > 1 standard deviation from center line (either side)
没有找到相关结果
已邀请:
从文献中看到的"连续六点趋势"的解释
P(n点趋势)=2*(0.9973)^n/n!
P(6点趋势)=2*(0.9973)^6/6!=0.00273
P(n点趋势)=2*(0.9973)^n/n!
P(6点趋势)=2*(0.9973)^6/6!=0.00273
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andrew_yin • 2017-02-03 10:21
问一下，休哈特将“拒真”的α定义为0.27%，那我们判异的原则是按照概率来算咯，比如说P(6点趋势)=2*(0.9973)^6/6!=0.00273=0.273%，是不是只要大于0.27%就算是异常？是不是所有的判异只要算出来的概率大于0.27%就可以判断成异常？为什么？
另外为什么这个6同向的判异准则的算法要除以6！，能否解释一下？
谢谢