USE THIS CHART:

Sample	Observations
1	0.473	0.479	0.511	0.492
2	0.515	0.486	0.499	0.494
3	0.536	0.47	0.515	0.513

In question 3, the lower control limit (LCL) of X bar chart is _______ (Refer to the chart below when needed). Keep two decimals if applicable.

		Factor for R Chart
Number of Observations in Subgroup	Factor for x-bar Chart	Lower Control Limit	Upper Control Limit
n	A2	D3	D4
2	1.88	0.00	3.27
3	1.02	0.00	2.57
4	0.73	0.00	2.28