那为神人给解释一下呗。单值-移动极差 公式里的2.66到底是什么意思？
单值-移动极差 公式里的2.66，下面英文说的到底是什么意思，不明白啊。麻烦大神给解释一下。
ucl=X±2.66MR
the multiplier of 2.66is directly related to the use of two consecutive data points,or a run length of two and the assumption that 3SD limits are employed.
ucl=X±2.66MR
the multiplier of 2.66is directly related to the use of two consecutive data points,or a run length of two and the assumption that 3SD limits are employed.
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