9.2 Quality Management – Quality Control & Assurance
What is Quality?
Quality is how well a product or service meets or exceeds customer expectations. Think of it as the “wow” factor that keeps customers coming back.
Quality Control (QC) vs. Quality Assurance (QA)
- QC – Inspection & Testing of finished products. Example: A bakery checks each cake for size, weight, and frosting thickness.
- QA – Process & System design to prevent defects. Example: The bakery sets a recipe, training, and equipment standards so cakes are consistently good.
📌 Key difference: QC is reactive (fix after production); QA is proactive (prevent before production).
Common QC Tools
- Checklists – simple yes/no questions.
- Control Charts – track variation over time.
- Pareto Analysis – focus on the 20% of defects causing 80% of problems.
- Fishbone Diagram – identify root causes.
QA Techniques
- Process Mapping – visualise each step to spot inefficiencies.
- Standard Operating Procedures (SOPs) – written instructions for consistency.
- Training & Certification – ensure staff know the standards.
- Continuous Improvement (PDCA) – Plan, Do, Check, Act cycle.
Meeting Customer Expectations: The “Golden Triangle”
| Aspect | What It Means | QC/QA Role |
|---|
| Product Quality | Features, reliability, durability. | QC tests, QA sets specs. |
| Service Quality | Speed, friendliness, responsiveness. | QA training, QC feedback. |
| Customer Experience | Overall satisfaction, brand perception. | QA strategy, QC surveys. |
Exam Tips 📚
- Use the QC vs QA distinction to structure answers.
- Give real-world examples (e.g., fast‑food, automotive, software).
- Show cause‑effect relationships with diagrams or tables.
- Explain how customer expectations drive quality standards.
- Remember the Golden Triangle – link product, service, and experience.
Quick Flashcard
Question: What is the main difference between QC and QA?
Answer: QC focuses on detecting defects after production; QA focuses on preventing defects by improving processes before production.