Question: The data shown in table below are for twelve samples of size 6. Sample Mean Range 1 6.58 4.02 2 11.52 2.85 3 7.80 7.38
The data shown in table below are for twelve samples of size 6.
| Sample | Mean | Range |
| 1 | 6.58 | 4.02 |
| 2 | 11.52 | 2.85 |
| 3 | 7.80 | 7.38 |
| 4 | 9.26 | 2.81 |
| 5 | 6.94 | 5.06 |
| 6 | 10.38 | 3.09 |
| 7 | 9.71 | 2.53 |
| 8 | 10.65 | 4.85 |
| 9 | 7.65 | 2.44 |
| 10 | 8.64 | 1.83 |
| 11 | 10.30 | 3.45 |
| 12 | 9.00 | 4.00 |
- Determine the appropriate control charts for this problem and find UCL and LCL.
- Draw the charts. What conclusions can be drawn from the charts?
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