Question: Are you comfortable with the control limits that you set with the previous questions? No. The X-bar Chart has one point near the LCL on
Are you comfortable with the control limits that you set with the previous questions?
| No. The X-bar Chart has one point near the LCL on day 23 and one day near the UCL on day 26. | ||
| Yes. A review of both charts shows a stable process (no points or patterns of concern). | ||
| No. Both charts appear to have a random distribution indicating that there is assignable variation. | ||
| Yes, because I calculated the control limits correctly and that is all that needs to be considered. |
In addition to having a stable process (no point or patterns of concern; showing a random distribution indicating that only natural variation is present) for the 30 days data, what else makes you comfortable with the control limits that you set?
| With 30 samples, each with a sample size of 5, there is enough data to accurately establish/set up a control chart. | ||
| There is NOT enough data to accurately establish/set up a control chart and so I am NOT comfortable with the control limits set. |
RESERVATION TIME in MINUTES Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 4.5 3.7 4.3 3.7 4.4 3.5 4.5 3.6 4.4 4.3 3.7 4.5 4.2 4.2 3.7 4.6 4.2 4.4 4.2 4.3 4.6 4.1 3.6 4.1 4.3 4.4 3.6 3.5 4.5 4.4 2 3.8 4.6 3.5 3.7 4.6 3.5 4.3 3.6 3.5 4.3 3.5 3.5 4.3 4.2 4.5 4.4 3.5 3.4 3.4 4.5 4.6 4.3 4.0 4.5 4.1 4.6 3.8 3.5 4.2 3.5 3 3.9 4.2 4.2 4.4 3.8 4.3 4.1 4.4 4.6 4.0 4.2 3.8 3.4 4.0 4.6 4.5 4.4 3.6 3.4 4.5 4.0 3.6 3.6 3.6 3.5 4.5 4.0 4.3 3.9 4.1 4 4.4 3.9 4.1 4.4 4.6 4.3 4.5 3.7 3.6 3.5 3.7 4.2 4.4 3.8 3.5 3.8 3.4 3.9 4.3 3.6 4.4 4.5 3.4 3.9 3.9 4.4 3.7 4.2 3.8 4.1 5 4.0 3.9 4.3 3.6 4.3 3.4 3.5 3.8 4.1 3.8 3.9 4.1 3.6 4.1 3.5 4.3 3.7 4.3 4.0 3.6 3.9 3.8 3.5 3.4 3.5 4.2 3.9 4.6 4.0 4.4 1st 10 Days of Monitoring Reservation Processing Time 1 3 4 3.4 4.3 3.4 3.5 3.4 4.4 4.1 2.8 3.9 4.5 Day 1 2 3 4 5 6 7 8 9 10 3.5 4.4 4.9 3.9 4.2 3.3 4.3 5.1 5.2 3.5 Day 1 2 3 4 5 6 7 8 9 10 2 4.5 3.5 3.2 3.7 3.8 3.6 4.6 5.2 3.3 3.8 2nd 10 Days of Monitoring Reservation Processing Time 1 3 4 4.1 4.3 4.2 4.0 4.2 4.2 4.6 4.3 4.1 4.2 5.0 4.3 4.4 4.2 4.3 4.2 3.7 4.0 4.2 4.0 4.7 3.1 3.1 4.6 4.3 4.9 4.8 4.9 5.1 3.8 2 4.3 4.1 4.4 3.8 4.1 4.3 3.6 4.3 4.6 4.4 4.5 4.3 4.1 4.9 4.3 4.3 3.4 4.0 4.0 4.4 5 5.0 3.1 4.9 3.1 3.5 3.3 4.4 4.2 3.3 5.1 5 4.2 4.2 4.0 4.1 4.2 4.4 3.8 4.3 3.8 4.2
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