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OPM assignment 4

OPM assignment 4 - the control limits management should be...

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Question 1: Sample Mean Range UCLx LCLx X- Double Bar UCLr LCLr R-Bar 1 10 0.01 10.01 9.99 10 0.02 0 0.01 2 10 0.01 10.01 9.99 10 0.02 0 0.01 3 9.99 0.01 10.01 9.99 10 0.02 0 0.01 4 10.01 0.02 10.01 9.99 10 0.02 0 0.01 5 10 0.01 10.01 9.99 10 0.02 0 0.01 6 10 0.01 10.01 9.99 10 0.02 0 0.01 7 10 0.01 10.01 9.99 10 0.02 0 0.01 8 10.01 0.01 10.01 9.99 10 0.02 0 0.01 9 10 0 10.01 9.99 10 0.02 0 0.01 10 10 0.01 10.01 9.99 10 0.02 0 0.01 11 10 0.01 10.01 9.99 10 0.02 0 0.01 12 10.01 0.01 10.01 9.99 10 0.02 0 0.01 Average: 10 0.01 GIVEN DATA n 5 A2 0.58 D4 2.12 D3 0 OUTPUT 10.01 9.99 0.02 0 Discussion Questions For Both Parts: Part 1: The data indicated there was data that was out of control due to the data falling below the Rbar. Management should be alerted of this data. Part 2 Q3: Not all of the samples from Alabama Airlines fall within the control limits. When one falls outside
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Unformatted text preview: the control limits, management should be alerted. Q4: Mike Hanna can report that his quality of service is poor and needs to be investigated. The data crosses the control limits multiple times suggesting a question mark in performance. UCL = X double bar + A 2 R bar LCL = X double bar- A 2 R bar UCL R = D 4 R bar LCL R = D 3 R bar 1 2 3 4 5 6 7 8 9 10 11 12 9.98 9.99 10 10.01 Column B Column D Column E Column F 1 2 3 4 5 6 7 8 9 10 11 12 0.02 0.04 Column C Column G Column H Column I...
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