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Country Codes Cycle Time In this assignment you will create control charts for the following data for each country code.
1 65 1. Compute the average cycle time for each country code.
1 53 2. Compute the moving range for each country code.
1 46 3. Compute the confidence interval for each using the average cycle time plus or minus the product of 2.66 times the average moving range for each country code.
1 45 4. Turn in the spreadsheet with calculations.
1 66 5. Does the OTR time appear to be stable? Why or why not?
1 45 6. If you were to use a control chart to evaluate stability, which chart would you use? Why?
1 31 7. What can you learn about the distribution of the installation process?
1 31 8. Does it appear that the country has an impact on installation time? Why or why not?
1 32
1 65
1 50
1 42
1 30
1 42
1 20
1 75
1 52
1 40
1 44
1 87
1 86
1 45
1 75
1 56
1 75
Country Codes Cycle Time
5 68
5 64
5 70
5 75
5 70
5 50
5 50
5 75
Country Codes Cycle Time
6 64
6 36
6 69
6 35
6 45
6 47
6 46
6 46
Country Codes Cycle Time
7 45
7 56
7 41
7 40
7 60
7 53
7 26
7 50
7 30
7 61
7 88