Validates foundational knowledge of Six Sigma fundamentals, the DMAIC phases, basic quality tools and supporting improvement projects.
CSSYB is a 90-question, open-book exam (80 scored) in 2 hours 18 minutes, built around DMAIC, lean and basic quality-tool scenarios rather than heavy statistics. We compared the main options on question style, official coverage and price.
Most people should start with Quality Gurus' free 50 questions. Work the ASQ Study Guide's 300 questions, then use ASQ's question bank for timed practice runs.
| Practice test | Best for | Questions | Price |
|---|---|---|---|
 CSSYB Free Practice Tests | Free first look | 50 | Free |
 ASQ Certified Six Sigma Yellow Belt Study Guide, 2nd Edition | Printed section drills | 300 | $60 |
| ASQ CSSYB Question Bank | Official question bank | 240 | $119 |
| CSSYB Practice Test Package | Budget mock exams | 469 | $25/3 months |
 QCI CSSYB Online Practice Exam | Large question pool | 1,000 | $70/year |
Two free sets of 25 questions: a review set that explains each answer as you go and a timed mock of 60 minutes. Both run in the browser.
Great fit if you want to see exam-style CSSYB questions and find your weak sections before paying for anything.
Poor fit if you need exam-length runs; use the ASQ Question Bank.
A softcover with 161 questions by Body of Knowledge section and 139 more in random order. Every solution explains the answer and names the BoK section.
Great fit if you want the cheapest official practice and want to learn where answers sit in your handbook.
Poor fit if you want a timed on-screen run; use the ASQ Question Bank.
Three 80-question sets written by ASQ-certified experts, with a timed exam mode and a review mode that explains right and wrong answers.
Great fit if you want ASQ-written, exam-length sets to rehearse the timed sitting.
Poor fit if you want cheaper practice first (see the ASQ Study Guide or Quality Gurus).
Eight tests with explanations: an 80-question mock drawn fresh from a 294-question pool on every attempt, five topic quizzes and the two free sets.
Great fit if you want cheap volume and a new full-length mock each time you sit one.
Poor fit if you want ASQ's own wording; use the ASQ Question Bank.
A 1,000-question bank with explanations and references, taken by category or as a simulated exam. It installs on one Windows or Mac computer and does not run on phones or Chromebooks.
Great fit if you already study from QCI's Primer and want a large bank to match.
Poor fit if you want a smaller, cheaper bank; use the ASQ Study Guide or Quality Gurus.
ASQ: Yellow Belt exam page ↗Reddit: study guide or practice exam ↗Reddit: yellow belt exam difficulty ↗Reddit: which study materials ↗
ASQ does not publish a free sample exam; its question bank and study guide are paid. Quality Gurus gives 50 free exam-style questions (a 25-question review set and a 25-question, 60-minute mock) with explanations and no signup.
Candidates describe it as mostly Six Sigma fundamentals and basic lean and quality tools, without the statistics load of the Green or Black Belt exams. It is open book, which helps if your reference is tabbed.
The Study Guide's 300 questions plus one or two full 80-question timed runs on questions you have not seen is a sensible target. ASQ's bank has three sets and Quality Gurus draws a fresh mock each attempt.
Yes. The exam is open book, but references and notes must be bound (stitched, glued, ring or spiral binders) and stay bound. Build and tab your reference before you start timed practice.