Question: Problem 1. Ten clips are produced each day and the diameter of each clip is critical and must be controlled, the range and mean of
Problem 1. Ten clips are produced each day and the diameter of each clip is critical and must be controlled, the range and mean of this diameter are:
| Day | Mean (mm) | Range (mm) |
| 1 | 156.9 | 4.2 |
| 2 | 153.2 | 4.6 |
| 3 | 153.6 | 4.1 |
| 4 | 155.5 | 5.0 |
| 5 | 156.6 | 4.5 |
- What is the value of
? - What is the value of
? - What are the UCL
and LCL
using 3
? - Whare are the UCLR and LCLR using 3
? - If the true diameter mean should be 155mm and you want this as your centre line, what are the new UCL
and LCL
?
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