The following data were collected on the number of nonconformities per unit for 10 time periods:
Time | Nonconformities per Unit |
1 | 7 |
2 | 3 |
3 | 6 |
4 | 3 |
5 | 4 |
6 | 5 |
7 | 3 |
8 | 5 |
9 | 2 |
10 | 0 |
a. Construct the appropriate control chart and determine the LCL and UCL.
b. Are there any special causes of variation?
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