Factors for computing control chart limits are provided in Table E1 below. Table E1: Factors for Computing Control Limits (3 sigma) Sample Size, n Mean Factor, A2 Upper Range, D4 Lower Range, D3 2 1.880 3.268 0 ♡ 1.023 2.574 st 4 0.729 2.282 0 5 0.577 2.115 0 6 0.483 2.004 0 7 0.419 1.924 0.076 8 0.373 1.864 0.136 a 0.337 1.816 0.184 10 10 0.308 1.777 0.223 Is the process in statistical control? No. Yes. Cannot tell; more information is needed.
Factors for computing control chart limits are provided in Table E1 below. Table E1: Factors for Computing Control Limits (3 sigma) Sample Size, n Mean Factor, A2 Upper Range, D4 Lower Range, D3 2 1.880 3.268 0 ♡ 1.023 2.574 st 4 0.729 2.282 0 5 0.577 2.115 0 6 0.483 2.004 0 7 0.419 1.924 0.076 8 0.373 1.864 0.136 a 0.337 1.816 0.184 10 10 0.308 1.777 0.223 Is the process in statistical control? No. Yes. Cannot tell; more information is needed.
Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment
Section: Chapter Questions
Problem 1CE
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