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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, how many more points will Jarred need to take to show process is out of control?
1
3
None of these
2
None of these is correct as process is already out of control, more points may only exacerbate the condition but it is still out of control. No further data points need to be taken prove out of control condition. (PMBOK 2013 Rev 5th Edition, pgs 227-252).
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