CSSYB Sample Questions & Answers
Foundational Six Sigma and Lean concepts and roles carry the top share, ahead of analyzing processes and finding root causes, measurement system analysis and statistics, project identification basics, and the combined improve and control phases.
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- Question 1Advanced
Six Sigma Fundamentals · Quality Tools and Six Sigma Metrics
A manufacturing plant produces circuit boards. In a recent batch of 500 boards, quality inspectors found a total of 25 defects. Each circuit board has 4 specific opportunities for a defect to occur (solder joint, component placement, trace integrity, and alignment). The calculated Defects Per Million Opportunities (DPMO) for this batch is _____
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Correct answer: D
DPMO is calculated as: (Total Defects / (Total Units × Opportunities per Unit)) × 1,000,000. Here, Total Defects = 25. Total Units = 500. Opportunities per Unit = 4. Calculation: (25 / (500 × 4)) × 1,000,000 = (25 / 2000) × 1,000,000 = 0.0125 × 1,000,000 = 12,500.
- Question 2IntermediateSelect 2
Six Sigma Fundamentals · Team Basics
A cross-functional team needs to prioritize a list of 15 potential process improvement ideas. The team leader wants to ensure that all members have an equal voice and that a few dominant personalities do not skew the final decision. Which TWO of the following decision-making tools would be MOST effective in this scenario? (Select TWO)
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Correct answers: A, C
Multivoting allows a team to narrow down a large list of options through a structured series of votes. Along with NGT, it prevents dominant personalities from skewing the results.
Nominal Group Technique (NGT) and Multivoting are both structured decision-making tools designed to democratize the selection process. NGT involves silent generation of ideas followed by anonymous ranking, which directly prevents dominant personalities from taking over. Multivoting allows a team to narrow down a large list of options through a structured series of votes.
- Question 3Intermediate
Six Sigma Fundamentals · Six Sigma Roles and Responsibilities
Within a Six Sigma project infrastructure, which role is primarily responsible for identifying the project, providing the necessary resources, and clearing organizational roadblocks that the project team encounters?
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Correct answer: B
The Champion (often an executive or senior manager) supports the Six Sigma team by aligning the project with organizational goals, providing necessary resources, and removing political or organizational roadblocks. While sponsors provide funding, the Champion actively clears the path for the team's success.
- Question 4Intermediate
Six Sigma Fundamentals · Quality Tools and Six Sigma Metrics
A software development firm is analyzing its Cost of Poor Quality (COPQ). They discover that a significant portion of their budget is spent on processing warranty claims, issuing refunds, and managing a high volume of help-desk calls from angry users. Into which specific COPQ category do these expenses fall?
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Correct answer: A
External Failure Costs occur when a defect reaches the customer. Warranty claims, refunds, and help-desk support for delivered bugs are classic examples. Internal failure costs happen before delivery (e.g., scrap, rework), while appraisal costs relate to inspection and testing.
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