IASSC Lean Six Sigma Black Belt Practice Tests
514 questions for IASSC Lean Six Sigma Black Belt with every answer explained, in 6 timed tests. Written in-house, not affiliated with IASSC.
- 514 questions mapped to the IASSC Lean Six Sigma Black Belt Body of Knowledge
- Two full-length, 150-question mock exams at the real exam length, plus four phase drills
- A full explanation on every answer, right and wrong
- Organised around DMAIC, at the depth the Black Belt exam demands
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Practice built to pass, not to pad the count
Original, not recycled
Written in-house to the published syllabus. No real exam papers, no shared braindumps.
Every answer explained
Learn why the key is right and why each distractor is the tempting trap.
A route, not a score
Topic tests find your weak areas; the timed mock confirms readiness.
Real exam standard
Timed and marked at the actual pass mark, so the score means something.
514 questions across 6 tests
| Practice test | Coverage | Questions |
|---|---|---|
| Define phase | Project definition and the voice of the customer | 50 |
| Measure phase | Process mapping, measurement systems and capability | 53 |
| Analyze phase | Hypothesis testing, regression and advanced analysis | 56 |
| Improve & Control phase | Designed experiments, improvement and control | 55 |
| Full mock 1 | All DMAIC phases, exam pace | 150 |
| Full mock 2 | All DMAIC phases, exam pace | 150 |
| Total | 514 |
The DMAIC phases
- 01Define: project selection, the voice of the customer and project charters
- 02Measure: process mapping, measurement systems analysis and process capability
- 03Analyze: hypothesis testing, correlation, regression and multivariate analysis
- 04Improve: design of experiments and advanced improvement techniques
- 05Control: statistical process control, control plans and sustaining the gains
A sample question, in the course style
A multi-vari study shows variation is largest time-to-time rather than within or between units. Where should the Black Belt look for causes?
- AIn factors that change over time, such as shifts or material lots
- BIn within-piece measurement error that recurs on every unit
- CIn the resolution of the measuring gauge alone
- DIn the width of the customer's specification limits
When time-to-time variation dominates, the causes lie in factors that change over time, such as shifts, lots or settings.
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Questions, answered
Are these the real exam questions?
No. Every question is written in-house to the current published syllabus. There are no real exam papers and no shared braindumps.
Will this guarantee I pass?
No. These are study aids to help you practise to the real standard and find your weak areas. Use them alongside the official syllabus and study materials.
Topic tests or the full mock first?
Start with the topic tests to find your weak areas, then sit the full timed mock to confirm you are ready before you book.
How many times can I take the tests?
Lifetime access on Udemy with unlimited retakes, and you get every future update.
What if the course isn't right for me?
Udemy offers a 30-day money-back guarantee on your purchase.
GradePath Learning is an independent education provider and is not affiliated with, endorsed by, or approved by the International Association for Six Sigma Certification. IASSC and Lean Six Sigma are trademarks of their respective owners, used here only to identify the exam these practice tests prepare you for.