Question: Sample Hour 1 2 3 4 5 X 7 R R 1 23 22 21 22 22 2 17 19 42 18 8 3 12

Sample Hour 1 2 3 4 5 X 7 R R 1 23 22 21 22 22 2

Sample Hour 1 2 3 4 5 X 7 R R 1 23 22 21 22 22 2 17 19 42 18 8 3 12 7 9 7 11 4 27 42 22 22 23 5 21 20 36 18 19 6 31 34 12 26 36 a) Determine the upper and lower X and R control chart limits. b) Do the data indicate a process that is in control? Why? UCL; = + A,R UCLR = DAR LCL = 5 A2R LCLR = D3R

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