Question: Sample # obs1 obs2 obs3 1 5.4 3.8 2 2 6.5 8.2 7 3 9.5 6.5 8 4 8.6 9.7 11 5 4.9 5.6 7.5

Sample # obs1 obs2 obs3
1 5.4 3.8 2
2 6.5 8.2 7
3 9.5 6.5 8
4 8.6 9.7 11
5 4.9 5.6 7.5
6 5 7.7 9.3

Please keep 2 decimals for all calculation results.

(a) X-bar bar =?

(b) R-bar =?

(c) Calculate UCL and LCL for X-bar chart? Are there any points out of control?

(d) Calculate UCL and LCL for R chart? Are there any points out of control?

SHOW YOUR WORK PLEASE

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