🏭 CSSGB Exam Prep
Free study guide for the Six Sigma Green Belt exam. Covers all six sections of the 2022 Body of Knowledge with plain-English explanations, worked examples, and exam tips. No account needed.
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Take the free CSSGB diagnostic →20 original questions — all 6 BoK sections — instant feedback
The 20 diagnostic questions are free in the CSSGB Quest app now. The full practice bank (300 original questions across all 6 sections, an explanation for every wrong option) and unlimited fresh calculation and chart problems (DPMO and sigma level, capability, gage R&R, hypothesis tests, DOE, control limits, takt time and OEE, with new numbers every time and every answer checked by code) come with the 90-day Exam-Window Pass; checkout is opening soon.
Open CSSGB Quest →The CSSGB Body of Knowledge
The 2022 CSSGB Body of Knowledge has six sections. The exam has 110 multiple-choice questions, of which 100 are scored (10 are unscored trial items), with 4 hours 18 minutes of exam time. Question counts below are per the 2022 BoK; check asq.org for the current details before you book. CQE vs. CSSGB vs. CSSBB →
| Section | Title | Scored questions | Key topics |
|---|---|---|---|
| I | Overview: Six Sigma and the Organization | 11 | Value of Six Sigma, drivers and metrics, lean concepts, VSM, DFSS, FMEA |
| II | Define Phase | 20 | Project selection, SIPOC, VOC/CTQ, charter, planning tools, DPMO/RTY, team dynamics |
| III | Measure Phase | 20 | Process documentation, probability, distributions, data collection, MSA, capability |
| IV | Analyze Phase | 18 | Multi-vari, correlation and regression, hypothesis tests, ANOVA, chi-square, root cause analysis |
| V | Improve Phase | 16 | DOE basics, waste elimination, cycle-time reduction, kaizen |
| VI | Control Phase | 15 | SPC and control charts, control plan, TPM, visual factory |
DMAIC Overview
▶ Overview: Six Sigma and the Organization (I) — 11 questions
▶ Define (II) — 20 questions
▶ Measure (III) — 20 questions
▶ Analyze (IV) — 18 questions
▶ Improve (V) — 16 questions
▶ Control (VI) — 15 questions
How Green Belt differs from Black Belt
| Topic | Green Belt (CSSGB) | Black Belt (CSSBB) |
|---|---|---|
| Statistics | Descriptive statistics, t/F/chi-square tests, one-way ANOVA, simple regression, basic 2-level DOE | Adds multiple regression, multivariate tools, fractional factorial and other advanced DOE |
| Project scope | Local process, single function | Cross-functional, system-level |
| MSA | Gage R&R, bias, linearity, stability, attribute agreement | Same topics in more depth, with study design and analysis |
| Control charts | I-MR, X̄-R, X̄-s, p, np, c, u; run rules | Adds special charts such as CUSUM and EWMA |
| Lean depth | Lean concepts, VSM, waste elimination, cycle-time reduction, kaizen, TPM, visual factory | Same lean toolkit applied at enterprise scale |
| Team role | Leads smaller projects, supports BB | Leads complex projects, mentors GBs |
CSSBB Exam Prep → CQE Exam Prep →
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