In: Operations Management
Use the attached file to make the appropriate x-bar and R charts. You must include the data points, center line, upper and lower control limits. (Remember, only the data points should NOT be a straight line.)
| MEAN | CI x-bar (Grand Mean)  | 
LCL x-bar (CI-A2*R-bar)  | 
UCL x-bar (CI+A2*R-bar)  | 
Sample Range (Max-Min)  | 
R-bar (Mean)  | 
UCL R (R-bar*D4)  | 
|||||||
| 1 | 12.00 | 12.50 | 12.47 | 12.78 | 13.00 | ||||||||
| 2 | 12.78 | 11.18 | 11.92 | 11.95 | 11.86 | ||||||||
| 3 | 13.30 | 13.00 | 12.95 | 12.98 | 13.32 | ||||||||
| 4 | 11.29 | 12.87 | 12.53 | 11.42 | 12.37 | ||||||||
| 5 | 12.06 | 11.49 | 11.01 | 11.04 | 12.67 | ||||||||
| 6 | 13.30 | 10.40 | 13.50 | 12.65 | 12.57 | ||||||||
| 7 | 11.82 | 12.19 | 11.98 | 12.09 | 12.19 | ||||||||
| 8 | 12.00 | 11.13 | 11.11 | 11.02 | 10.90 | ||||||||
| GRAND MEAN | |||||||||||||
| n= | |||||||||||||
| A2= | |||||||||||||
| D4= | |||||||||||||