Clarify the root cause. Consider as many potential cause factors as possible.
- Interviews
- praetor charts
- Data stratification
- 5 whys
- Cause and effects analysis
- Process Capability Analysis
- Scatter diagrams
- Box plots
- Regression & Correlation
- FMEA
Identify areas for improvement
Instructions
- Look at only the prioritized problem from step 2, brainstorm to find potential root causes.
- Use 5 why analysis to test potential root causes until you find the true root cause.
- Go and See to verify throughout the process to ensure the root cause is accurate.
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