Six Sigma vs Lean Certification
Compare Six Sigma and Lean certifications for process improvement. Quality vs waste reduction - which methodology?
Six Sigma Green Belt
ASQ/IASSC
Lean Practitioner
Various (SME, AME)
Feature-by-Feature Breakdown
Compare all aspects of these certifications side by side
| Feature | Six Sigma Green Belt | Lean Practitioner |
|---|---|---|
| Provider | ASQ/IASSC | Various (SME, AME) |
| Difficulty Level | Intermediate | Foundational |
| Exam Duration | Varies by provider | Varies |
| Exam Cost | $200-$500 USD | $200-$400 USD |
| Exam Format | Multiple choice + project | Multiple choice + practical |
| Prerequisites | None | None |
| Validity Period | Varies (typically does not expire) | Does not expire |
| Ideal For | Quality engineers, process improvement specialists | Manufacturing engineers, operations managers |
| Salary Range | $75,000 - $110,000 | $70,000 - $105,000 |
What Each Certification Covers
Key topics and domains covered in each exam
Six Sigma Green Belt Focus Areas
- DMAIC
- Statistical Analysis
- Root Cause Analysis
- Process Capability
Lean Practitioner Focus Areas
- 5S
- Value Stream Mapping
- Kaizen
- Waste Elimination
- Continuous Flow
Our Recommendation
Six Sigma reduces variation; Lean eliminates waste. Many combine them as Lean Six Sigma.
Choose Six Sigma Green Belt
Choose Six Sigma for data-driven quality improvement and statistical analysis.
Choose Lean Practitioner
Choose Lean for waste reduction and process efficiency in manufacturing.
Frequently Asked Questions
Which is better: Six Sigma Green Belt or Lean Practitioner?
Six Sigma reduces variation; Lean eliminates waste. Many combine them as Lean Six Sigma.
What are the salary differences between Six Sigma Green Belt?
Six Sigma Green Belt typically offers salaries around $75,000 - $110,000, while Lean Practitioner offers $70,000 - $105,000.
Which certification should I get first?
Choose Six Sigma for data-driven quality improvement and statistical analysis. Choose Lean for waste reduction and process efficiency in manufacturing.
How long does it take to prepare for these certifications?
Preparation time varies based on experience. Most candidates spend 4-12 weeks studying, depending on their background and the certification difficulty level.
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