Root Cause Puzzle Lab

Fishbone · 5-Why · Cause & Effect Matrix — V3 Trainer Build
Analyze & Improve · Belt-Ready

Scenarios

Work through each puzzle.
Tip: Use these as short Analyze-phase breaks between heavier modules (Minitab, DOE, regression, etc.).

Scenario

Level
Key Signals
Sample Data (Noisy Evidence)
Skim the pattern, but don’t overfit any single row. Use this to sanity-check your hypothesis.
Observed Symptoms
    Candidate Causes (by Category)
    Select all causes you believe materially contribute to the problem. Then nominate a primary root cause.
    Primary Root Cause & Confidence
    Confidence 75%
    5-Why Builder (Optional)
    Choose the best next step in the 5-Why chain for this scenario. Compare to Instructor Mode once you’re close.

    Feedback & C&E Matrix

    View
    – / 100 pts
    No run yet
    Root cause accuracy: – Contributor coverage: – Confidence calibration: – 5-Why alignment: –
    Mini Cause & Effect View
    In learner mode, only impact and your selections are visible. Once you hit 100%, the true roles unlock; Instructor Mode always shows them.
    Cause Impact True Role Your Pick