Question: 03. 25 Marks Construct Mean and Range chart from the following data. Assume constant values A2 = 1.02, D3 = 0, D4 : 2.57 is
03. 25 Marks Construct Mean and Range chart from the following data. Assume constant values A2 = 1.02, D3 = 0, D4 : 2.57 is the process under control? SUB GROUP 1 M V VII ll IX X XI XA Sample 1 65 65 4 4 2 6 6 6 5.5 7 4 4 Sample2 6.5 6 55 3 0 6 4 4 5 6 3 3.5 Sample 3 5 7 55 33 1 6 4 6 4.5 6 3.5 3 Sample 4 6 4 4 5 3 5.5 7 5 5 5 4 4
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