Question: Consider the following data table, Subgroups Quality characteristic 1 12 11.5 11 11 2 10.3 11.3 11.3 11.1 3 10.5 11.5 12 10.5 4 10
Consider the following data table,
| Subgroups | Quality characteristic | |||
| 1 | 12 | 11.5 | 11 | 11 |
| 2 | 10.3 | 11.3 | 11.3 | 11.1 |
| 3 | 10.5 | 11.5 | 12 | 10.5 |
| 4 | 10 | 9.7 | 10.5 | 10.9 |
| 5 | 10 | 8.8 | 10 | 10.3 |
| 6 | 9.5 | 9.6 | 10.1 | 10.2 |
| 7 | 9.6 | 10 | 10.9 | 10.3 |
- Design X-bar and R control charts.
- Determine, whether the process is in-control or not.
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