Six Sigma Green Belt Cheat Sheet 2026 — DMAIC Visual Guide

# Six Sigma Green Belt Cheat Sheet 2026: Visual DMAIC Reference for CSSGB Candidates

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FULL ARTICLE COPY

Title: Six Sigma Green Belt Cheat Sheet 2026: Visual DMAIC Reference for CSSGB Candidates

The Six Sigma Green Belt certification (ASQ CSSGB or IASSC ICGB) requires mastery of statistical tools, DMAIC methodology, and quality management concepts — across a 170-question exam that spans 4.5 hours.

The fastest candidates don't re-read textbooks in the final weeks. They review visual reference sheets — one per tool, one per phase, one per concept — until pattern recognition is automatic.

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DMAIC Framework: The Core Structure

Every CSSGB exam question maps to one of five DMAIC phases. A strong cheat sheet organizes all tools by phase:

Define

Project Charter (problem statement, goal statement, scope, team)

SIPOC diagram (Suppliers → Inputs → Process → Outputs → Customers)

Voice of Customer (VOC) → CTQ translation

Affinity diagrams, stakeholder analysis

Measure

Process mapping (swimlane, VSM)

Data collection plan (continuous vs. discrete, operational definitions)

Measurement System Analysis (MSA/Gage R&R)

Basic statistics: mean, median, mode, range, standard deviation

Process capability: Cp, Cpk, Pp, Ppk, sigma level, DPMO

Analyze

Root cause analysis: fishbone (Ishikawa), 5 Whys, fault tree

Hypothesis testing: t-test, ANOVA, chi-square, F-test

Correlation and regression (r², p-value interpretation)

Pareto analysis (80/20 rule)

Improve

DOE (Design of Experiments): full factorial, fractional factorial

Lean tools: 5S, kaizen, waste elimination (8 wastes of lean)

Solution selection matrix, pilot planning

Control

Control charts: X̄-R, X̄-s, Individuals (IMR), p, np, c, u

Control plan, reaction plan

Statistical Process Control (SPC) interpretation rules

Mistake proofing (poka-yoke)

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Statistical Tools: Where Most Candidates Fail

The CSSGB exam is notably heavy on statistics. Key areas:

Hypothesis Testing Selection:

Comparing 2 means → 2-sample t-test

Comparing 3+ means → One-way ANOVA

Comparing proportions → Chi-square or 2-proportion z-test

Comparing variances → F-test (Levene's)

Process Capability:

Cp = (USL - LSL) / (6σ) — measures spread

Cpk = min[(USL - X̄), (X̄ - LSL)] / (3σ) — measures centering

Cpk < 1.0 = incapable process

Cpk > 1.33 = capable (common industrial threshold)

6 Sigma = 3.4 DPMO = Cpk ≈ 2.0

Control Chart Selection:

Continuous data, subgroups → X̄-R or X̄-s

Continuous data, individuals → IMR (I-MR)

Attribute (defectives), variable n → p chart

Attribute (defectives), constant n → np chart

Attribute (defects per unit) → u chart

Attribute (defects), constant n → c chart

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Free Six Sigma Green Belt Study Map Sample

We've built 20 visual Six Sigma Green Belt study maps covering every DMAIC phase:

DMAIC overview (complete phase map)

Control charts selection guide

Hypothesis testing decision tree

Process capability (Cp, Cpk, Pp, Ppk)

Measurement System Analysis (Gage R&R)

Statistical tools reference

Lean tools and 8 wastes

Root cause analysis methods

Quality tools (Pareto, fishbone, scatter)

Voice of Customer (VOC) to CTQ

→ Get your free Six Sigma Green Belt study map

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*StudyMaps creates visual study maps for professional certifications. CSSGB, NCLEX-RN, CCNA 200-301, FE Civil. View Six Sigma maps →*

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title: "Six Sigma Green Belt Cheat Sheet 2026: Visual DMAIC Reference for CSSGB Candidates"

description: "Free Six Sigma Green Belt cheat sheet PDF. Visual DMAIC reference covering control charts, hypothesis testing, process capability (Cpk), Gage R&R, and lean tools for CSSGB/ICGB exam prep."

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