1. The lower control limit is non-negative |
2. Normal distribution is the order for this data |
3. The lower control limit is not significant |
4. These charts give the average quality characteristics |
A) 1, 2 and 3
B) 2, 3 and 4
C) 1, 3 and 4
D) 1, 2 and 4
Correct Answer: C
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