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Find the control limits for the Range Chart

Posted: Wed Dec 08, 2021 7:07 am
by answerhappygod
Find the control limits for the Range Chart

For sum of sub group ranges to be at 369 and the number of subgroups is 25 with each subgroup having 5 samples, the control limits for the Range Chart are

0, 25
0, 31
11, 25
11, 31