Sampling four pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24 hours has produced the following results:

Hour	x-bar	R	Hour	x-bar	R
1	3.11 cm	0.85 cm	13	3.25 cm	0.71 cm
2	2.83	1.31	14	3.1	1.18
3	3.12	1.06	15	3.22	1.43
4	2.84	0.5	16	3.39	1.26
5	2.86	1.43	17	3.07	1.17
6	2.74	1.29	18	2.86	0.32
7	3.41	1.61	19	3.05	0.53
8	2.89	1.09	20	2.65	1.13
9	2.65	1.08	21	3.02	0.71
10	3.28	0.46	22	2.85	1.33
11	2.94	1.58	23	2.83	1.17
12	2.64	0.97	24	2.97	0.4

Develop appropriate control charts and determine whether there is any cause for concern in the cutting process. Plot the information and look for patterns