Question: Construct Mean and Range chart from the following data. Assume constant values A2 = 1.02, D3 = 0, D4 = 2.57 Is the process under

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? CHART MUST SUB SAMPLE 1 SAMPLE 2 SAMPLE 3 SUB SAMPLE 1 SAMPLE 2 SAMPLE 3 GROUP I GROUP 1 16.25 16.25 12.5 14 15 11.25 11.25 2 16.25 15 17.5 15 10 16.25 13.75 3 10 13.75 13.75 16 10 17.5 0 4 10 7.5 8.75 17 12.5 15 10 5 5 0 2.5 18 7.5 15 15 6 15 15 15 19 13.75 12.5 18.75 7 15 10 10 20 17.5 15 12.5 8 15 10 15 21 12.5 12.5 12.5 9 13.75 12.5 11.25 22 12.5 6.25 8.75 10 17.5 15 15 23 10 13.75 12.5 11 10 7.5 8.75 24 10 0 5 12 10 8.75 7.5 25 12.5 7.5 8.75 13 12.5 8.75 12.5 26 6.25 12.5 7.5

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