Question: Sample size (n) is 9, average of the sample ranges ( R )is 4. Calculate the UCL and LCL of the range chart for this

Sample size (n) is 9, average of the sample

Sample size (n) is 9, average of the sample ranges ( R )is 4. Calculate the UCL and LCL of the range chart for this process. n A2 D3 D4 2 1.880 0.000 3.267 3 1.023 0.000 2.575 4 0.729 0.000 2.282 5 0.577 0.000 2.114 6 0.483 0.000 2.004 7 0.419 0.076 1.924 8 0.373 0.136 1.864 9 0.337 0.184 1.816 10 0.308 0.223 1.777

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