Question: Consider the following data table, Subgroups Quality characteristic 1 11.5 11 10.5 10.5 2 9.8 10.8 10.8 10.6 3 10 11 11.5 10 4 9.5
Consider the following data table,
| Subgroups | Quality characteristic | |||
| 1 | 11.5 | 11 | 10.5 | 10.5 |
| 2 | 9.8 | 10.8 | 10.8 | 10.6 |
| 3 | 10 | 11 | 11.5 | 10 |
| 4 | 9.5 | 9.2 | 10 | 10.4 |
| 5 | 9.5 | 8.3 | 9.5 | 9.8 |
| 6 | 9 | 9.1 | 9.6 | 9.7 |
| 7 | 9.1 | 9.5 | 10.4 | 9.8 |
a) Design Xbar and R control charts.
b) Determine, whether the process is in control or not.
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