How to determine the values of A2, D3 and D4 in the control chart? Is there a common coefficient table? Kneel down!

In the control chart, the values of A2, D3 and D4 are constants, which can be obtained by looking up the table. Baidu will know about the "common coefficient table of control chart". The selection of A2, D3 and D4 depends on the sample size of your subgroup. For example, two subgroups choose 65438+0.88 of A2.

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