allPM.com :: Sample PMP Test Question and Answer #3

Tips: Sample PMP Test Question and Answer #3

Published on Wednesday, April 22, 2009 - 01:55 PM

You are the project manager for a project team that is developing a new machine for your company. The machine will produce a specific part used to be used in the assembly of a state of the art robotics product. You are in the testing phase of the project life cycle. The control chart produced during the test indicates 8 consecutive data points above the process average but well below the UCL. How do you interpret the information on the chart?

a) The process is in control and the next phase of testing should begin

b) The chart indicates a run and further analysis is required

c) The data points are within the mean and the UCL and indicate acceptable performance

d) The process average should be re-calculated Answer = b. A run on a control chart indicates that some specific or special cause may be a factor in the process. A general rule for interpreting control charts is that if seven or more consecutive data points appear on the control chart a “run” has been established and an out of control situation may exist. Further analysis to determine the cause of the run is necessary.

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