question archive brief story about what might be going on and what might need to be done to improve the process, not just "in control" or "out of control " (e
brief story about what might be going on and what might need to be done to improve the process, not just "in control" or "out of control " (e
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brief story about what might be going on and what might need to be done to improve the process, not just "in control" or "out of control " (e.g. sequence above mean line on days 2-8 indicate a negative special cause of ?ight delays that should be investigated.) You may make marks on the chart. *"' Keep in mind the nature of the problem and the data you are gathering! Remember that the distributions for expected variability are different for quality measures based on small samples versus individual measures. 3. The file Banktime.xls Represents daily random samples of the amount of time people wait for a teller to serve them and Bank of Hawaii. Use this data to generate the appropriate control chart(s). Past the chart(s} here and address the following: What kind of control chart is this? _ p-chart _ c-chart _ R-chart _ X-bar chart _ Individual X-chart _ p-chart Is this process in—control? Explain here: 4. The file Hotel.xls Represents data taken over several consecutive days on the number of rooms that were ready by check-in time at Outrigger Hotel. There are 200 rooms in this hotel. Use this data to generate the appropriate control chart(s). Past the chart(s) here and address the following: What kind of control chart is this? _ p-chart __ c-chart _ R-chart __ X-bar chart _ Individual X—chart _ p—chart Is this process in-control? Explain here:
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Step-by-step explanation
Sol. 3)
Control Chart type :
Xbar and R Chart
Control Chart for the Mean 10.000 1927618 8.000 3 Sample Mean 4.000 2.000 0.000 081593
-2.000 1 2 3 4 5 6 7 8 598 4 12 43 14 15 16 17 18 19 20
The process seems to be in control as no points is beyond the upper control ir lower control limits. Also there are equal amount of points above and below the line, looks normal varying.
Explanation:
When points on a control chart move outside the upper or lower control limit, the process is said to be "out of control." As long as the points are within control limits, the process is "in control."
4)
Control chart type :
P - chart
There are not an equal amount of points above and below
the center line as there are 12 above and 16 below, hence the process is likely not in control.
Explanation:
A special cause exists if two out of three consecutive points fall in zone A or beyond. In our case, this is applied to both halves of the chart. However, only one half is considered at a time.
Please see the attached file for the chart
