The following table contains the measurements of the key length dimension from a fuel injector. These samples were taken at one-hour intervals. Construct a three-sigma X ̅-chart and R-chart for the length of the fuel injector. What can you say about this process?
| Sample Number | Observations | |||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | |
| 1 | 0.57 | 0.70 | 0.61 | 0.67 | 0.20 | 0.51 | 0.95 | 0.23 | 0.24 | 0.59 | 0.70 | 0.04 | 0.05 | 0.48 | 0.59 | 0.95 | 1.00 | 0.14 | 0.71 | 0.77 |
Solution:

The table shows the value of constants in control chart:



The following table contains the measurements of the key length dimension from a fuel injector. T...
The following table contains the measurements of the key length dimension from a fuel injector. These samples of size five were taken at one-hour intervals. Use three-sigma control limits. Use Exhibit 10.13. OBSERVATIONS SAMPLE NUMBER 1 2 3 4 5 1 0.480 0.497 0.489 0.515 0.482 2 0.479 0.496 0.513 0.488 0.526 3 0.504 0.496 0.506 0.479 0.518 4 0.503 0.496 0.476 0.478 0.481 5 0.481 0.502 0.519 0.453 0.484 6 0.481 0.496 0.497 0.495 0.501 7 0.503 0.513 0.490...
Problem 10-29 (Algo) The following table contains the measurements of the key length dimension from a fuel injector. These samples of size five were taken at one-hour intervals. Use three-sigma control limits. Use Exhibit 10.13. SAMPLE NUMBER WNEOVO UN 1 0.480 0.479 0.504 0.503 0.481 0.481 0.503 0.512 0.495 0.505 0.504 0.461 0.513 0.495 0.502 0.479 0.464 0.501 0.500 0.485 OBSERVATIONS 2 3 4 5 0.497 0.489 0.515 0.482 0.496 0.513 0.488 0.526 0.496 0.506 0.4790.518 0.496 0.476 0.478 0.481...
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