# 🎯 Operations Quick Reference Sheet ## The Master Framework **Every Operations Problem = WANT - HAVE × Environment = Trade-off** ## TQFP Dimensions - **T**ime: Speed of delivery/service - **Q**uality: Consistency, reliability, features - **F**lexibility: Customization, adaptability - **P**rice: Cost to customer ## The 16 Trade-offs You'll See ### Week 1: Process Design 1. **McDonald's**: Speed requires standardization 2. **Burger King**: Flexibility costs time 3. **JetBlue**: Peak capacity expensive, average useless 4. **Uber**: Price balances dynamic supply/demand 5. **CVS**: Limited scope enables efficiency ### Week 2: Inventory 6. **Theory**: Inventory = expensive uncertainty insurance 7. **Zara**: Speed beats forecast accuracy 8. **Pooling**: √n locations = inventory reduction 9. **Newsvendor**: Better stockout than surplus (low margin) ### Week 3: Networks 10. **Amazon**: Proximity > economies of scale 11. **Nokia**: Efficiency creates fragility 12. **Airlines**: Same seat, different prices ### Week 4: Integration 13. **Littlefield**: Bottlenecks move 14. **GenAI**: AI patterns, human exceptions 15. **Strategy**: Choose what NOT to do 16. **Exam**: Match capabilities to requirements ## Key Formulas by Session - **Session 1**: Utilization = Demand/Capacity - **Session 5**: EOQ = √(2DS/H) - **Session 7**: Pooled σ = σ/√n - **Session 8**: Critical Ratio = (Price-Cost)/(Price-Salvage) - **Session 12**: Revenue = Σ(Price × Demand) by segment ## Questions to Ask Every Class 1. What can't they have? (The trade-off) 2. What forces this choice? (Environment) 3. What would it cost to change? (Investment) 4. Who chose differently? (Competition) 5. When would this break? (Limits) ## The Only Graph You Need ``` High Performance ↑ A | 🚫 Nobody Here L | ⭐ Pick 2-3 L | ⭐⭐⭐ |________________→ One Dimension ``` Remember: **Excellence = Focused Trade-offs**