Lean Six Sigma Green Belt Certification DMAIC: Measure Phase Tools 2

Question 1

A process capability study yields Cpk = 0.65. What does this indicate?

Accepted Answer

The process is not capable and may be off-center

Answer

A Cpk below 1.0 indicates the process is not capable of consistently producing output within specification limits, and the offset from center makes it worse than Cp alone would suggest.

Question 2

Which gauge R&R metric specifically measures the variation contributed by different appraisers?

Accepted Answer

Reproducibility

Answer

Reproducibility captures the variation in measurements attributed to different operators (appraisers) measuring the same parts.

Question 3

In a measurement system analysis, a %Gage R&R of 28% is found. What action is most appropriate?

Accepted Answer

Investigate improvement but proceed with caution

Answer

A %Gage R&R between 10% and 30% is considered marginally acceptable; the team should work to improve the system but can proceed cautiously for some decisions.

Question 4

What is the primary purpose of a process map in the Measure phase?

Accepted Answer

To document current process flow and identify measurement points

Answer

In the Measure phase, process maps document the current state workflow and help identify where in the process data should be collected.

Question 5

A run chart shows a sequence of 8 consecutive points all above the median. This is an example of:

Accepted Answer

A run signal indicating special cause

Answer

Eight or more consecutive points on the same side of the median is a run signal, indicating a non-random (special cause) pattern in the data.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification DMAIC: Measure Phase Tools 2