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🎓 CSSBB Exam Prep
Free study guide for the Six Sigma Black Belt exam. Covers all nine sections of the 2022 CSSBB Body of Knowledge — from organization-wide deployment and team management through DMAIC and DFSS — with plain-English explanations, worked examples, and exam tips. No account needed.
Free Diagnostic
The 25 diagnostic questions are free in the CSSBB Quest app now. The full practice bank (306 original questions across all 9 sections, an explanation for every wrong option) and unlimited fresh calculation and chart problems (capability, DPMO and sigma level, gage R&R, distributions, hypothesis tests, DOE, control charts, OEE and takt time, with new numbers every time and every answer checked by code) come with the 90-day Exam-Window Pass; checkout is opening soon.
25 original questions across all 9 BoK sections, with an explanation for every answer and a score by section. No sign-in required.
Take the free CSSBB diagnostic →The 25 diagnostic questions are free in the CSSBB Quest app now. The full practice bank (306 original questions across all 9 sections, an explanation for every wrong option) and unlimited fresh calculation and chart problems (capability, DPMO and sigma level, gage R&R, distributions, hypothesis tests, DOE, control charts, OEE and takt time, with new numbers every time and every answer checked by code) come with the 90-day Exam-Window Pass; checkout is opening soon.
The CSSBB Body of Knowledge
The 2022 BoK has 150 scored questions (165 in total, including unscored ones). Weights below are each section’s share of the 150 scored questions. CQE vs CSSBB comparison →
| Section | Title | Scored Qs (~weight) | Key topics |
|---|---|---|---|
| I | Organization-wide Planning & Deployment | 12 (~8%) | Six Sigma and lean fundamentals, business systems and processes, strategic deployment, leadership roles, change management |
| II | Organizational Process Management & Measures | 12 (~8%) | Stakeholder impact, benchmarking, KPIs/KBIs/OKRs, customer loyalty, financial measures (NPV, ROI, hard vs. soft savings) |
| III | Team Management | 15 (~10%) | Team formation, facilitation, team dynamics, team training |
| IV | Define | 20 (~13%) | VOC, business case and charter, project management tools, analytical tools (the seven management and planning tools) |
| V | Measure | 25 (~17%) | Process characteristics, data collection, MSA, basic statistics, probability, process capability |
| VI | Analyze | 22 (~15%) | Correlation, regression, multivariate tools, hypothesis testing, FMEA, root cause and gap analysis |
| VII | Improve | 21 (~14%) | Design of experiments, lean methods, implementation and piloting |
| VIII | Control | 17 (~11%) | SPC, other controls (TPM, visual factory), control plan, sustaining improvements |
| IX | Design for Six Sigma (DFSS) Framework & Methodologies | 6 (~4%) | DMADV, DMADOV, design for X, robust design |
Study the BoK
All pages are free. Start with Define and Measure — they set up every other phase.
▶ Define (IV) — ~13%
Define tollgate
Charter, scope, deliverables
Project charter
Business case, problem statement, SMART goals
VOC & CTQ tree
Customer interviews, affinity, CTQ translation
SIPOC & process mapping
Scope boundaries, swim-lane maps
▶ Measure (V) — ~17%
MSA in DMAIC
Gage R&R, attribute agreement, %Study Var
Process capability in DMAIC
Baseline vs entitlement, Cp/Cpk, long-term sigma
Data collection planning
Operational definitions, sampling, measurement plan
Graphical analysis
Histogram, box plot, run chart, scatter plot
▶ Analyze (VI) — ~15%
Root cause analysis
Fishbone, 5 Whys, fault tree, hypothesis testing
Multi-vari analysis
Positional, cyclical, temporal variation
Hypothesis testing in DMAIC
t-test, ANOVA, chi-square, practical significance
Regression in DMAIC
Simple & multiple regression, residuals
FMEA in DMAIC
Analyze vs Design FMEA, risk reduction
▶ Improve (VII) — ~14%
DOE in DMAIC
2k factorial, main effects, interactions, optimization
Improve tollgate
Solution selection, pilot plan, risk assessment
Solution selection matrix
Pugh matrix, weighted criteria, prioritization
Piloting & scaling
Pilot scope, metrics, from pilot to full rollout
Poka-yoke at Black Belt level
Detection vs prevention, design of error proofing
▶ Control (VIII) — ~11%
Control plan (BB level)
Reaction plans, monitoring frequency, ownership
SPC in DMAIC Control
Chart selection, control limits, response plan
Sustaining gains
Handoff, documentation, lessons learned
▶ Organization, Process & Team (I–III) — ~26%
Change management: ADKAR
Prosci model, Kotter 8-step, resistance
Financial benefits & ROI
Hard vs soft savings, NPV, IRR, payback
Team dynamics
Tuckman stages, facilitation, conflict resolution
DMAIC overview
Five phases, tollgates, the Black Belt role
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