Six Sigma Detective: DMAIC Mystery Solver

Phase 1 · DEFINE — Identify the Problem

PizzaFast Corp's delivery times have exploded. Interview all stakeholders — click each question.

👤 Customer Service Manager — Sarah

👤 Operations Manager — Marcus

💡 DMAIC Tip — DefineIdentify the problem, stakeholders, and impact. Write a clear problem statement with measurable scope.

💼 Interview Tip"In Define, I create a project charter with a problem statement, scope, timeline, and measurable goals — before spending any money."

Phase 2 · MEASURE — Collect Baseline Data

Click each metric to reveal baseline data. You need all 6 before proceeding.

📊 Baseline: Avg delivery 52 min (target: 30). 68% late → 680,000 DPMO → barely 1σ quality. Massive improvement opportunity!

💡 DMAIC Tip — MeasureEstablish baselines before making changes. DPMO = (Defects ÷ Opportunities) × 1,000,000.

💼 Interview Tip"I always baseline first. Without measurement, improvement is just opinion. DPMO gives a universal yardstick."

Phase 3 · ANALYZE — Find Root Causes

🐟 Fishbone Diagram

Potential causes across the 6 M categories:

👥 PeopleHigh turnover · Insufficient training · Understaffed peaks

📋 MethodsNo route optimization · Manual dispatch · No batching

📦 MaterialsCheap boxes lose heat · Ingredient shortages

⚙️ MachinesOven capacity maxed · Aging delivery fleet

📏 MeasurementNo real-time tracking · Time clocks don't match

🌍 EnvironmentRadius expanded without more drivers

📊 Pareto Analysis — Click bars to explore

🎯 80/20 Rule: Route Planning (40%) + Driver Wait (25%) = 65% of all delays. Focus on the vital few!

💡 DMAIC Tip — AnalyzeFishbone brainstorms ALL causes; Pareto finds the vital few. 80% of problems come from 20% of causes.

💼 Interview Tip"I use Fishbone to generate hypotheses, Pareto to prioritize with data. This prevents chasing the wrong problems."

Phase 4 · IMPROVE — Select Solutions

Pick solutions that target ROOT CAUSES from your Pareto. Select at least 2.

💡 DMAIC Tip — ImproveMatch solutions to root causes. High impact + low cost = best ROI.

💼 Interview Tip"I rank solutions by impact-to-cost ratio and Pareto alignment. Data drives the choice, not gut feel."

Phase 5 · CONTROL — Monitor & Sustain

Control charts ensure improvements stick.

X̄ Chart — Avg Delivery Time (min)

UCL: 35 · CL: 28 · LCL: 21 — All in control!

🎉 Results:
✅ Avg delivery: 52 → 28 min (−46%)
✅ Late rate: 68% → 8%
✅ DPMO: 680K → 80K (≈3σ)
✅ Customer satisfaction: +45%
✅ Weekly savings: ~$43,000

💡 DMAIC Tip — ControlUse control charts, SOPs, and training. Without a control plan, processes drift back.

💼 Interview Tip"Control is where most projects fail. I set up charts, document SOPs, and schedule audits."

🔍 Six Sigma Detective: DMAIC Mystery

Phase 1 · DEFINE — Identify the Problem

Phase 2 · MEASURE — Collect Baseline Data

Phase 3 · ANALYZE — Find Root Causes

🐟 Fishbone Diagram

📊 Pareto Analysis — Click bars to explore

Phase 4 · IMPROVE — Select Solutions

Phase 5 · CONTROL — Monitor & Sustain

🏆 Case Solved!