CDG Quality Control & Process Improvement 1 — Questions and Answers
Question 1: What distinguishes quality assurance from quality control in Certified Diamond Grader practice?
- They are identical concepts
- QA prevents defects through process design while QC detects defects through inspection (Correct answer)
- QC is more important than QA
- QA applies only to manufacturing settings
Correct answer: QA prevents defects through process design while QC detects defects through inspection
Quality assurance is proactive (preventing defects) while quality control is reactive (detecting defects), and both are essential in Certified Diamond Grader practice.
Question 2: Which method is commonly used for root cause analysis in CDG quality management?
- Random brainstorming only
- The Five Whys technique or fishbone diagram for systematic investigation (Correct answer)
- Blaming the most recent change
- Customer complaint counting
Correct answer: The Five Whys technique or fishbone diagram for systematic investigation
Structured root cause analysis methods like Five Whys and fishbone diagrams systematically trace problems to their fundamental causes rather than symptoms.
Question 3: What is a corrective action in Certified Diamond Grader quality systems?
- Punishing individuals for errors
- A systematic response to eliminate causes of nonconformity and prevent recurrence (Correct answer)
- Ignoring minor quality deviations
- Implementing only temporary fixes
Correct answer: A systematic response to eliminate causes of nonconformity and prevent recurrence
Corrective actions address root causes of quality issues to prevent recurrence, going beyond temporary fixes to create lasting improvement.
Question 4: How do CDG professionals establish measurable quality objectives?
- Using vague aspirational goals
- Defining specific, measurable, achievable, relevant, and time-bound targets (Correct answer)
- Comparing only to competitors
- Through subjective assessment alone
Correct answer: Defining specific, measurable, achievable, relevant, and time-bound targets
Quality objectives in CDG practice follow SMART criteria to ensure they can be tracked, achieved, and meaningfully evaluated.
Question 5: What is the Plan-Do-Check-Act (PDCA) cycle in quality management?
- A one-time improvement project
- A continuous improvement methodology with iterative planning, execution, evaluation, and refinement (Correct answer)
- A quality inspection checklist
- A staff performance review process
Correct answer: A continuous improvement methodology with iterative planning, execution, evaluation, and refinement
PDCA is a cyclical methodology where improvements are planned, implemented, evaluated, and refined in an ongoing loop of continuous improvement.
Question 6: How does benchmarking support quality improvement in Certified Diamond Grader practice?
- It creates unnecessary competition
- It identifies best practices by comparing performance against industry leaders or standards (Correct answer)
- It applies only to financial metrics
- It replaces internal quality audits
Correct answer: It identifies best practices by comparing performance against industry leaders or standards
Benchmarking compares current performance against best-in-class standards, identifying gaps and improvement opportunities in Certified Diamond Grader practice.
CDG Quality Control & Process Improvement 1
What distinguishes quality assurance from quality control in Certified Diamond Grader practice?