4.2 The data of 10 samples drawn from the bottled water production line (340 ml) is listed below:
Sample no. Measurement (ml)
1 345
2 345
3 340
4 345
5 340
6 350
7 355
8 345
9 355
10 355
4.2.1 Plot the above data on an SPC chart. (8)
Hint: Use 335 as the lower control limit and 350 as the upper control limit.
4.2.2 Analyse and comment on the process. (5)
4.2.1
4.2.2 The process is within statistical control
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