You want a free Six Sigma Green Belt practice test (or the Black Belt version) so you can see where you stand before you spend months studying. That’s a good instinct. So here’s what I offer for free, what’s in it, and how to use it well.
Create a free account to take the practice exams. Pick the belt you’re studying for:
No credit card needed. Signing up also adds you to my email list, and you can unsubscribe at any time.
What’s in the free Six Sigma Green Belt practice test and Black Belt exams
| Free Green Belt account | Free Black Belt account | |
|---|---|---|
| ASQ-style practice exam | 11 questions, 45-minute timer | 75 questions, 90-minute timer |
| IASSC-style practice exam | 14 questions across Define, Measure, Analyze, Improve and Control | 15 questions across Define, Measure, Analyze, Improve and Control |
| Topic quizzes | None | 9 short ASQ topic quizzes (Define through Control, DFSS, team management and more) |
| How-to-study lessons | 5 short lessons | 5 short lessons |
| Printable Bodies of Knowledge | ASQ, IASSC and Villanova Green Belt | None |
Every question is scored when you submit. You then see your answer, the right answer and an explanation of why it’s right. Your results are also broken down by topic, so you know where to focus. Finally, you can retake each Six Sigma Green Belt practice test (and each Black Belt exam) as often as you like.
To be clear about what these are: they’re short benchmarks. Most are automated versions of the free sample exams ASQ and IASSC publish, with my explanations added. In other words, they tell you where you stand. However, they are not full-length mock exams. (The paid study guides have those, and there’s more on that at the bottom of this page.)
Which free account should you pick?
First, pick the belt you’re sitting. For example, Green Belt candidates should start with the Green Belt account. Black Belt candidates, on the other hand, get more from the Black Belt account, because its 75-question ASQ exam covers the most ground of anything in the free set.
Not sure which belt you need yet? Then start with Green Belt. Black Belt exams assume you already know the Green Belt material, so it’s the right baseline either way. Also note one small difference: the Black Belt account asks you to confirm your email address before you start.
How the practice exams line up with ASQ, IASSC and other exams
Each certifying body publishes a Body of Knowledge (BoK). In short, it’s the list of topics its exam can test. The ASQ and IASSC practice exams follow their own BoKs, so the topic breakdown on your results maps straight onto what you’ll study.
- ASQ Certified Six Sigma Green Belt (CSSGB): take the ASQ-style Green Belt exam. See my ASQ Green Belt study guide and ASQ’s official Green Belt certification page.
- ASQ Certified Six Sigma Black Belt (CSSBB): take the 75-question exam, then the topic quizzes for your weak areas. See the ASQ Black Belt study guide and ASQ’s Black Belt certification page.
- IASSC Green Belt or Black Belt: take the IASSC-style exam for your belt. See the IASSC Green Belt study guide, the IASSC Black Belt study guide and IASSC’s certification overview.
- Villanova, ILSSI or a company exam: these follow the same DMAIC structure, so the ASQ and IASSC exams still work as a benchmark. Check your exam’s topic list first, for example the Villanova Green Belt guide or the ILSSI Black Belt BoK.
Whatever exam you’re sitting, I suggest you also take the ASQ exam for your belt, because it’s the broadest of the free sets.
How to get the most out of a Six Sigma Green Belt practice test
Most people use a practice exam as a final check. However, it’s far more useful at the start. The same steps work for the Black Belt exams too.
- First, take one cold, before you study. Your first score is a baseline, not a grade. A low number on day one is normal, and it’s useful.
- Next, study by topic, weakest first. The results page splits your score by topic. As a result, that list becomes your study plan for the next few weeks.
- Then read every explanation, including the ones you got right. After all, a lucky guess and real understanding look the same on a scorecard.
- Finally, retake it later, under the clock. If your topic scores move, your studying is working. If they don’t, change how you study, not just how long.
I call this benchmarking, and it’s how I prepared for my own exams. For more detail, read how the benchmarking approach works, how I practiced for my Six Sigma exams and how to study for Six Sigma certification.
Try two Six Sigma Green Belt practice test questions
For instance, here are two questions from the free IASSC-style Green Belt exam. Below each one, you’ll find the explanation you’d see after you submit.
1. A shoe manufacturer learned through a Lean Six Sigma project that its boot soles could be made from a different material, which removes two steps from the process. Removing those steps saves $7,500 per month. Reported on an annual basis, the financial savings for this project are:
- $45,000
- $75,000
- $90,000
- $120,000
Show the answer
C, $90,000. Savings are usually reported per year so they can be compared with project costs and with other projects. $7,500 x 12 months = $90,000. The other options are six, ten and sixteen months of savings. More on this in Financial Measures in Six Sigma.
2. When analyzing sample data, a Belt sees a bimodal distribution in which each mode is roughly normal. The most likely explanation is that the data:
- come from one stable process with only common-cause variation
- mix output from two distinct sources, such as two machines, shifts or suppliers
- were collected from a sample that was too small
- are the result of measurement resolution only
Show the answer
B. Two peaks usually mean two processes are mixed in one data set, for example two machines, two shifts or two suppliers’ parts. Stratify the data to separate them. See Bimodal Distribution.
Want the full free set? Create your free account and take the practice exams for your belt.
How other students used practice exams
A few students wrote up how they studied and passed. Each story is different, and that’s the point. So find the one that sounds like your situation.
- How Patrick passed his ASQ Six Sigma Green Belt exam (on his second attempt)
- How Jon passed the ASQ Six Sigma Green Belt exam
- How Dan V. passed the ASQ Six Sigma Green Belt
- How Larry passed his IASSC Six Sigma Green Belt exam
- Bryan’s tips on passing his Green Belt
- How Dana passed the ASQ Green Belt and the IASSC Black Belt
- How Dan S. passed the Villanova Lean Six Sigma Black Belt exam
- My own: how I passed the ASQ Six Sigma Black Belt exam
Ready for the full Green Belt or Black Belt study guide?
The free exams show you where you stand. If you want a complete program to close the gaps, however, that’s what my two study guides are for. Both cover ASQ, IASSC, Villanova and other exams, with full answer walkthroughs on the practice questions. Thousands have used this system to prepare.
| Pass Your Six Sigma Green Belt | Pass Your Six Sigma Black Belt | |
|---|---|---|
| Practice questions | 1,000+ | 2,000+ |
| Full-length mock exams | 8 | 8 |
| Price | $49 a month, or $247 for a year | $74 a month, or $347 for a year |
| Details | See the Green Belt study guide | See the Black Belt study guide |
Regional pricing: prices adjust to where you live. That’s because checkout applies a regional discount automatically, so the price you pay may be lower than the price above.
Two guarantees: if it’s not the right fit in the first 14 days, you get your money back. And if you complete the course (every lesson, plus every quiz and mock exam at 90% or better) and don’t pass your exam, send me your score report within 30 days of the exam and I’ll refund you: the full price on an annual plan, or your last payment on a monthly plan.
Or compare every plan side by side on the pricing page.
Not ready to buy? That’s fine. Instead, start with the free practice exams, because they’ll tell you a lot about what to study next.