Systematic root cause identification skill with 5 Whys, fishbone diagrams, fault tree analysis, and hypothesis testing
Systematically identifies root causes using multiple analysis methods like 5 Whys, fishbone diagrams, and statistical testing.
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The Root Cause Analyzer skill provides comprehensive capabilities for systematic root cause identification and verification. It supports multiple analysis methods including 5 Whys, Ishikawa diagrams, fault tree analysis, and statistical hypothesis testing.
skill: root-cause-analyzer
inputs:
problem_statement: "25% increase in customer complaints for product X"
analysis_method: "fishbone" # 5_whys | fishbone | fta | is_is_not
data:
defect_counts_by_category:
materials: 45
methods: 23
machines: 67
manpower: 12
measurement: 8
environment: 5
hypothesis_to_test: "Machine wear is causing increased defects"
outputs:
- root_cause_diagram
- potential_causes
- verified_root_causes
- pareto_analysis
- statistical_verification
- recommendations
Ask "Why?" iteratively to drill down to root cause:
| Technique | Use Case |
|---|---|
| Chi-square test | Categorical data relationships |
| Correlation analysis | Continuous variable relationships |
| Regression | Predictive relationships |
| Designed experiments | Controlled cause-effect testing |
| Pareto analysis | Vital few vs. trivial many |
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