At Becta's Computer Manufacturing, the production team sampled four pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24 hours; The following are the results produced (measured in cm):

Hour	xBar	R	Hour	xBar	R
1	3.25	.71	13	3.11	.85
2	3.1	1.18	14	2.83	1.31
3	3.22	1.43	15	3.12	1.06
4	3.39	1.26	16	2.84	.5
5	3.07	1.17	17	2.86	1.43
6	2.86	.32	18	2.74	1.29
7	3.05	.53	19	3.41	1.61
8	2.65	1.13	20	2.89	1.09
9	3.02	.71	21	2.65	1.08
10	2.85	1.33	22	3.28	.46
11	2.83	1.17	23	2.94	1.58
12	2.97	.4	24	2.64	.97

1. Label and compute the necessary data needed to calculate the upper and lower limits for the xBar and the R charts.  
2. Develop the xBar and the R charts.  
3. Plot the information and look for patterns. Determine and explain whether there is any cause for concern in the cutting process.