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Jarred is monitoring his current process with a control chart, the upper control limit(UCL) is .82, the lower control limit (LCL) is .25, and mean is .53. The data set thus far is as follows: .4, .49, .50, .52, .53, .68, .70, .87, .73, .73, .74.
Based on existing data above, which of the following statements below is most accurate?
The process may go back in control if the data trends down
None of these
The process is already out of control because a data point exceeded upper control limit and most likely the next point will show that we have 7 consecutive points are above the mean; continuing out of control process.
The process is indeterminate
As the process is already out of control, more than likely next point will cause 7 consecutive data points to exceed the mean; furthering process out of control condition. The remaining Answers are incorrect as process is already out of control due to one point exceeding UCL. (PMBOK 2013 Rev 5th Edition, pgs 227-252).
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