Page 204 - Six Sigma Demystified

184 Six SigMa DemystifieD

ChaPTER 8 QUiz

1. The best results for controlling a process are often achieved by
a. controlling the process outputs.
B. controlling the process inputs.
C. sampling inspection of supplier material.
D. monitoring all process parameters.

2. Effective control plans for process improvement efforts include training
a. process operators on the principles behind the change.
B. to ensure that employees understand their role in the problem-solving stage
of the new process.
C. for operational employees to acquire the skills necessary to perform the new
procedures or tasks.
D. all the above are true.

3. The control stage of a DMAIC project includes which of the following
objectives?
a. Communicating the lessons learned to others in the organization
B. Measuring the financial gain associated with the improvements
C. implementing methods to maintain the improvements
D. all the above

4. In comparing a preventative approach to process control with a plan that
places higher emphasis on the detection of process errors,
a. detection is the preferred approach because it will always prevent customers
from experiencing the error.
B. prevention is always the preferred approach regardless of cost.
C. the choice between prevention and detection should be based on the cost to
implement the preventive action versus the cost to implement the detection
scheme.

D. the choice between prevention and detection should be based on the total
costs, including the costs to implement and the longer-term costs, such as the
costs of correction and process disruption.

5. Engineering process control is a method to
a. stabilize a process by detecting process shifts.
B. manipulate process inputs to control process output.
C. correct for process autocorrelation using algorithmic logic.
D. all the above are true.