1. Complete table 1 below and use these values to help calculate the UCL (upper control limit) and LCL (lower control limit) you would need for an R chart (range chart) and an x chart. (The standard control chart values can be found in table 3 below) (16 Marks)

Table 1 Measurements of shaft diameter - 5 samples of sample size 4 each

	Observation
Sample	1	2	3	4	x	R
1	50.10	50.19	50.09	50.12
2	50.11	50.07	50.09	50.14
3	50.09	50.07	50.14	50.09
4	50.18	50.08	50.10	50.08
5	50.15	50.16	50.05	50.07