The IASSC Lean Six Sigma Green Belt Study Guide is a free, quick-reference list of essential material to prepare for and pass the certification exam. Master the IASSC Six Sigma Greenbelt Body of Knowledge with this Study Guide.

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## IASSC Universally Accepted Lean Six Sigma Body of Knowledge for Green Belts

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### 1.0 Define Phase

1.1 The Basics of Six Sigma

1.1.1 Meanings of Six Sigma

1.1.2 General History of Six Sigma & Continuous Improvement

1.1.3 Deliverables of a Lean Six Sigma Project

1.1.4 The Problem Solving Strategy Y = f(x)

1.1.5 Voice of the Customer, Business and Employee

1.1.6 Six Sigma Roles & Responsibilities

1.2 The Fundamentals of Six Sigma

1.2.1 Defining a Process

1.2.2 Critical to Quality Characteristics (CTQ’s)

1.2.3 Cost of Poor Quality (COPQ)

1.2.4 Pareto Analysis (80:20 rule)

1.2.5 Basic Six Sigma Metrics

a. including DPU, DPMO, FTY, RTY Cycle Time, deriving these metrics and these metrics. (Also see lean metrics)

1.3 Selecting Lean Six Sigma Projects

1.3.1 Building a Business Case & Project Charter

1.3.2 Developing Project Metrics

1.3.3 Financial Evaluation & Benefits Capture

1.4 The Lean Enterprise

1.4.1 Understanding Lean

1.4.2 The History of Lean

1.4.3 Lean & Six Sigma

1.4.4 The Seven Elements of Waste

a. Overproduction, Correction, Inventory, Motion, Overprocessing, Conveyance, Waiting.

1.4.5 5S

a. Straighten, Shine, Standardize, Self-Discipline, Sort

### 2.0 Measure Phase

2.1 Process Definition

2.1.1 Cause & Effect / Fishbone Diagrams

2.1.2 Process Mapping, SIPOC, Value Stream Map (Also see: Process Map, Difference between Process Map and Value Stream Map)

2.1.3 X-Y Diagram

2.1.4 Failure Modes & Effects Analysis (FMEA)

2.2 Six Sigma Statistics

2.2.1 Basic Statistics

2.2.2 Descriptive Statistics

2.2.3 Normal Distributions & Normality

2.2.4 Graphical Analysis

2.3 Measurement System Analysis

2.3.1 Precision & Accuracy

2.3.2 Bias, Linearity & Stability

2.3.3 Gage Repeatability & Reproducibility

2.3.4 Variable & Attribute MSA

2.4 Process Capability

2.4.1 Capability Analysis

2.4.2 Concept of Stability

2.4.3 Attribute & Discrete Capability

2.4.4 Monitoring Techniques

### 3.0 Analyze Phase

3.1 Patterns of Variation

3.1.1 Multi-Vari Analysis

3.1.2 Classes of Distributions

3.2 Inferential Statistics

3.2.1 Understanding Inference

3.2.2 Sampling Techniques & Uses

3.2.3 Central Limit Theorem

3.3 Hypothesis Testing

3.3.1 General Concepts & Goals of Hypothesis Testing

3.3.2 Significance; Practical vs. Statistical

3.3.3 Risk; Alpha & Beta

3.3.4 Types of Hypothesis Test

3.4 Hypothesis Testing with Normal Data

3.4.1 1 & 2 sample t-tests

3.4.2 1 sample variance

3.4.3 One Way ANOVA

a. Including Tests of Equal Variance, Normality Testing and Sample Size calculation, performing tests and interpreting results.

3.5 Hypothesis Testing with Non-Normal Data

3.5.1 Mann-Whitney

3.5.2 Kruskal-Wallis

3.5.3 Mood’s Median

3.5.4 Friedman

3.5.5 1 Sample Sign

3.5.6 1 Sample Wilcoxon

3.5.7 One and Two Sample Proportion

3.5.8 Chi-Squared (Contingency Tables)

a. Including Tests of Equal Variance, Normality Testing and Sample Size calculation, performing tests and interpreting results.

### 4.0 Improve Phase

4.1 Simple Linear Regression

4.1.1 Correlation

4.1.2 Regression Equations

4.1.3 Residuals Analysis

4.2 Multiple Regression Analysis

4.2.1 Non- Linear Regression

4.2.2 Multiple Linear Regression

4.2.3 Confidence & Prediction Intervals

4.2.4 Residuals Analysis

4.2.5 Data Transformation, Box Cox

### 5.0 Control Phase

5.1 Lean Controls

5.1.1 Control Methods for 5S

5.1.2 Kanban

5.1.3 Poka-Yoke (Mistake Proofing)

5.2 Statistical Process Control (SPC)

5.2.1 Data Collection for SPC

5.2.2 I-MR Chart

5.2.3 Xbar-R Chart

5.2.4 U Chart | 5.2.5 P Chart | 5.2.6 NP Chart *See attribute charts

5.2.7 X-S chart

5.2.8 CumSum Chart

5.2.9 EWMA Chart

5.2.10 Control Chart Anatomy

5.3 Six Sigma Control Plans

5.3.1 Cost Benefit Analysis

5.3.2 Elements of the Control Plan

5.3.3 Elements of the Response Plan

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## Comments (8)

Hi, I subscribe for the BOK but it looks like l got the 6 Sigma BOK, however, l need the study for the Lean 6 Sigma BOK and study plan.

Hi Shola,

These are one and the same. I’ll update the title of the page to add clarity.

Thanks, Ted.

Hi Ted, really great material and information. I do feel though as if the website is very difficult to use. A lot of jumping around between articles and tests, and then I’m not sure if I have missed something.

I understand. There is a lot of material here.

The best way to progress is to go through the materials in the order of the Course home page.

At the beginning of each Module there is a reference list. If you’ve taken good training, you’re all set. If you want a refresher, you can use the links there to help fill in the gaps. And of course, if you get any questions wrong in the quizzes or exams, follow the links there to the articles to improve your understanding.

Best, Ted.

Hi Ted,

I am thinking of completing the AISSC Green Belt. I definitely will be using your study guide, however, I saw that the membership is canceled after 1 year. Are there resources (in like a book) that I can buy to have reference to once I complete the Green Belt?

Cheers,

Hi David,

There are a number of downloads available and more added every month.

The vast majority of the site is open to all – hundreds of pages like the ones linked to on this page. Those reference pages will be available for a long time.

Best, Ted.

How much time daily or weekly should I reserve studying for the Lean Green Belt test? And…roughly how much will it cost to take the test?

Thanks for the advice!

Don

Hi Don,

Thanks for reaching out. This is difficult to answer because it depends on so many variables;

1) What’s your current level of training and experience?

2) How comprehensive was your training?

3) How much time do you have to apply to studying per week.

I write more about this here but I think 4-8 weeks is a typical band.