CPP Lean Six Sigma Fundamentals 3

Question 1

During the Analyze phase of DMAIC, which tool is most commonly used to identify root causes by exploring cause-and-effect relationships?

Accepted Answer

Fishbone (Ishikawa) diagram

Answer

The fishbone diagram organizes potential causes into categories (e.g., Man, Machine, Method) to systematically explore root causes of a problem.

Question 2

What does the 'C' represent in the DMAIC acronym?

Accepted Answer

Control

Answer

Control is the final phase of DMAIC, where teams implement control plans and monitoring systems to sustain the gains achieved.

Question 3

Which Lean tool is specifically designed to separate needed from unneeded items and remove the latter from the workspace?

Accepted Answer

5S — Seiri (Sort)

Answer

Seiri (Sort), the first S in 5S, involves identifying and removing unnecessary items from the work area to reduce clutter and improve efficiency.

Question 4

In a Six Sigma project, a Black Belt calculates that a process yields 3.4 defects per million opportunities. What sigma level does this correspond to?

Accepted Answer

6 sigma

Answer

Six Sigma is defined by achieving no more than 3.4 DPMO, accounting for a 1.5-sigma long-term shift from the short-term process mean.

Question 5

Which of the following is an example of 'overprocessing' waste in the Lean framework?

Accepted Answer

Applying a finish coat that exceeds customer specification requirements

Answer

Overprocessing occurs when more work is done on a product than what the customer actually requires or values, adding cost without adding value.

(CPP) Certified Process Professional Practice Test

(CPP) Certified Process Professional Practice Test

CPP Lean Six Sigma Fundamentals 3