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There is also a free Lean Six Sigma course from MIT that was done a few years ago, for those looking for a good overview with simulations, but I’ve been having trouble getting the videos to play on my computer.

Here is the Body of Knowledge (BOK) for the Certified Six Sigma Green Belt (CSSGB) exam (listed below).

**Overview: Six Sigma (Six Sigma and Golf example) and the Organization (15 Questions**)

**Six sigma and organizational goals****Value of six sigma**

Recognize why organizations use six sigma, how they apply its philosophy and goals, and the origins of six sigma (Juran, Deming, Shewhart, etc.). Describe how process inputs, outputs, and feedback impact the larger organization. (Understand)**Organizational drivers and metrics**

Recognize key drivers for business (profit, market share, customer satisfaction, efficiency, product differentiation) and how key metrics and scorecards are developed and impact the entire organization. (Understand)**Organizational goals and six sigma projects**

Describe the project selection process including knowing when to use six sigma improvement methodology DMAIC [StatStuff] as opposed to other problem-solving tools (DMADV, DFSS & PMI), and confirm that the project supports and is linked to organizational goals. (Understand)

**Lean principles in the organization****Lean concepts and tools**[StatStuff]

Define and describe concepts such as value chain, flow, pull, perfection, etc. (flow, pull, one-piece flow), and tools commonly used to eliminate waste, including kaizen, 5S [BMGi | StatStuff], error-proofing (Poka Yoke), value-stream mapping (VSM, current state and future state), etc. (Understand)**Value-added and non-value-added activities**[StatStuff]

Identify waste in terms of excess inventory, space, test inspection, rework, transportation, storage, etc., and reduce cycle time to improve throughput [Work in Process (WIP)]. (Understand)**Theory of constraints**

Describe the theory of constraints. (Understand)

**Design for Six Sigma (DFSS) in the organization****Quality function deployment (QFD)**

Describe how QFD fits into the overall DFSS process. (Understand) (Note: the application of QFD is covered in II.A.6.)**Design and process failure mode and effects analysis (DFMEA & PFMEA)**

Define and distinguish between design FMEA (DFMEA) and process (PFMEA) and interpret associated data. (Analyze) (Note: the application of FMEA is covered in II.D.2.)**Road maps for DFSS**

Describe and distinguish between DMADV (define, measure, analyze, design, verify) and IDOV (identify, design, optimize, verify), identify how they relate to DMAIC and how they help close the loop on improving the end product/process during the design (DFSS) phase. (Understand)

**Six Sigma –***Define*(25 Questions)

**Process Management for Projects****Process elements**

Define and describe process components and boundaries. Recognize how processes cross various functional areas and the challenges that result for process improvement efforts. (Analyze)**Owners and stakeholders**

Identify process owners, internal and external customers, and other stakeholders in a project. (Apply)**Identify customers**

Identify and classify internal and external customers as applicable to a particular project, and show how projects impact customers. (Apply)**Collect customer data**

Use various methods to collect customer feedback (e.g., surveys, focus groups, interviews, observation) and identify the key elements that make these tools effective. Review survey questions to eliminate bias, vagueness, etc. (Apply)**Analyze customer data**Use graphical, statistical, and qualitative tools to analyze customer feedback. (Analyze)

**Translate customer requirements**

Assist in translating customer feedback into project goals and objectives, including critical to quality (CTQ) attributes and requirements statements. Use voice of the customer analysis tools such as quality function deployment (QFD) to translate customer requirements into performance measures. (Apply)

**Project management basics****Project charter and problem statement**Define and describe elements of a project charter and develop a problem statement, including baseline and improvement goals. (Apply)

**Project scope**[StatStuff]

Assist with the development of project definition/scope using Pareto charts, process maps [StatStuff], etc. (Apply)**Project metrics**Assist with the development of primary and consequential metrics (e.g., quality, cycle time, cost) and establish key project metrics that relate to the voice of the customer. (Apply)

**Project planning tools**

Use project tools such as Gantt charts, critical path method (CPM), and program evaluation and review technique (PERT) charts, etc. [Milestones] (Apply)**Project documentation**

Provide input and select the proper vehicle for presenting project documentation (e.g., spreadsheet output, storyboards, etc.) at phase reviews, management reviews and other presentations. (Apply)**Project risk analysis**

Describe the purpose and benefit of project risk analysis, including resources, financials, impact on customers and other stakeholders, etc. (Understand)**Project closure**

Describe the objectives achieved and apply the lessons learned to identify additional opportunities. (Apply)

**Management and planning tools**

Define, select, and use 1) affinity diagrams, 2) interrelationship digraphs, 3) tree diagrams, 4) prioritization matrices, 5) matrix diagrams, 6) process decision program (PDPC) charts, and 7) activity network diagrams. (Apply)**Business results for projects****Process performance**

Calculate process performance metrics such as defects per unit (DPU), rolled throughput yield (RTY), cost of poor quality (COPQ), defects per million opportunities (DPMO) sigma levels and process capability indices. Track process performance measures to drive project decisions. (Analyze)**Failure mode and effects analysis (FMEA)**[StatStuff]

Define and describe failure mode and effects analysis (FMEA). Describe the purpose and use of scale criteria and calculate the risk priority number (RPN). (Analyze)

**Team dynamics and performance****Team stages and dynamics**

Define and describe the stages of team evolution, including forming, storming, norming, performing, adjourning, and recognition. Identify and help resolve negative dynamics such as overbearing, dominant, or reluctant participants, the unquestioned acceptance of opinions as facts, groupthink, feuding, floundering, the rush to accomplishment, attribution, discounts, plops, digressions, tangents, etc. (Understand)**Six sigma and other team roles and responsibilities**

Describe and define the roles and responsibilities of participants on six sigma and other teams [StatStuff], including black belt, master black belt, green belt, champion, executive, coach, facilitator, team member, sponsor, process owner, etc. (Apply)**Team tools**

Define and apply team tools such as brainstorming, nominal group technique, multi-voting, etc. (Apply)**Communication**

Use effective and appropriate communication techniques for different situations to overcome barriers to project success. (Apply)

- Six Sigma –
*Measure*(30 Questions)

**Process analysis and documentation****Process modeling**

Develop and review process maps, written procedures, work instructions, flowcharts, etc. (Analyze)**Process inputs and outputs**

Identify process input variables and process output variables SIPOC [StatStuff], and document their relationships through cause and effect (fishbone) diagrams [StatStuff], relational matrices, 5 Why’s, etc. (Analyze)

**Probability and statistics****Drawing valid statistical conclusions**

Distinguish between enumerative (descriptive) and analytical (inferential) studies, and distinguish between a population parameter and a sample statistic. (Apply)**Central limit theorem and sampling distribution of the mean**

Define the central limit theorem and describe its significance in the application of inferential statistics for confidence intervals [StatStuff], control charts, etc. (Apply)**Basic probability concepts**

Describe and apply concepts such as independence, mutually exclusive, multiplication rules, etc. (Apply)

**Collecting and summarizing data****Types of data and measurement scales**

Identify and classify continuous (variables) and discrete (attributes) data. Describe and define nominal, ordinal, interval, and ratio measurement scales. (Analyze)**Data collection methods**Define and apply methods for collecting data such as check sheets, coded data, etc. (Apply)

**Techniques for assuring data accuracy and integrity**

Define and apply techniques such as random sampling, stratified sampling, sample homogeneity, etc. (Apply)**Descriptive statistics**

Define, compute, and interpret measures of dispersion and central tendency, and construct and interpret frequency distributions and cumulative frequency distributions. (Analyze)**Graphical methods**

Depict relationships by constructing, applying and interpreting diagrams and charts such as stem-and-leaf plots, box-and-whisker plots, run charts, scatter diagrams, Pareto charts, etc. Depict distributions by constructing, applying and interpreting diagrams such as histograms, normal probability plots, etc. (Create)

**Probability distributions**

Describe and interpret normal, binomial, and Poisson, chi square, Student’s t, and F distributions. (Apply)**Measurement system analysis**[StatStuff]

Calculate, analyze, and interpret measurement system capability using repeatability and reproducibility (GR&R), measurement correlation, bias, linearity [StatStuff], percent agreement, and precision/tolerance (P/T). (Evaluate)**Process capability and performance****Process capability studies**[StatStuff]

Identify, describe, and apply the elements of designing and conducting process capability studies, including identifying characteristics, identifying specifications and tolerances, developing sampling plans, and verifying stability and normality (dealing with non-normal data). (Evaluate)**Process performance vs. specification**

Distinguish between natural process limits and specification limits, and calculate process performance metrics such as percent defective. (Evaluate)**Process capability indices**

Define, select, and calculate C_{p}and C_{pk}, and assess process capability. (Evaluate)**Process performance indices**

Define, select, and calculate P_{p}, P_{pk}, C_{pm}, and assess process performance. (Evaluate)**Short-term vs. long-term capability**

Describe the assumptions and conventions that are appropriate when only short-term data are collected and when only attributes data are available. Describe the changes in relationships that occur when long-term data are used, and interpret the relationship between long- and short-term capability as it relates to a 1.5 sigma shift. (Evaluate)**Process capability for attributes data**

Compute the sigma level for a process and describe its relationship to P_{pk}. (Apply)

- Six Sigma –
*Analyze*(15 Questions)

**Exploratory data analysis****Multi-vari studies**

Create and interpret multi-vari studies to interpret the difference between positional, cyclical, and temporal variation; apply sampling plans to investigate the largest sources of variation. (Create)**Simple linear correlation and regression**[StatStuff]

Interpret the correlation coefficient and determine its statistical significance (p-value); recognize the difference between correlation and causation. Interpret the linear regression equation and determine its statistical significance (p-value). Use regression models for estimation and prediction. (Evaluate)

**Hypothesis testing**[StatStuff]**Basics**

Define and distinguish between statistical and practical significance and apply tests for significance level, power, type I and type II errors. Determine appropriate sample size for various test. (Apply).**Tests for means [StatStuff] and nonparametric tests, variances [StatStuff], and proportions**

Define, compare, and contrast statistical and practical significance. (Apply)**Paired-comparison tests**

Define and describe paired-comparison parametric hypothesis tests. (Understand)**Single-factor analysis of variance (ANOVA)**[StatStuff]

Define terms related to one-way ANOVAs and interpret their results and data plots. (Apply)**Chi square**

Define and interpret chi square and use it to determine statistical significance. (Analyze)

- Design of experiments (DOE)
**Basic terms**

Define and describe basic DOE terms such as independent and dependent variables, factors and levels, response, treatment, error, repetition, and replication. (Understand)**Main effects**

Interpret main effects and interaction plots. (Apply)

**Statistical process control (SPC)**[StatStuff]**Objectives and benefits**

Describe the objectives and benefits of SPC, including controlling process performance, identifying special and common causes, etc. (Analyze)**Rational subgrouping**

Define and describe how rational subgrouping is used. (Understand)**Selection and application of control charts**Identify, select, construct, and apply the following types of control charts: x-bar and R, X-bar and S, individuals and moving range (ImR / XmR), median, p, np, c, and u. (Apply)

**Analysis of control charts**

Interpret control charts and distinguish between common and special causes using rules for determining statistical control [short and long term variation]. (Analyze)

**Implement and validate solutions**

Use various improvement methods such as brainstorming, main effects analysis, multi-vari studies, FMEA, measurement system capability re-analysis, and post-improvement capability analysis to identify, implement, and validate solutions through F-test, t-test, etc . (Create)**Control plan**[StatStuff]

Assist in developing a control plan to document and hold the gains, and assist in implementing controls and monitoring systems. (Apply)

Definition of Complexity Levels for each topic (listed from least complex to most complex).

**Remember** – Be able to remember or recognize terminology, definitions, facts, ideas, materials, patterns, sequences, methodologies, principles, etc. (Also commonly referred to as recognition, recall, or rote knowledge)

**Understand** – Be able to read and understand descriptions, communications, reports, tables, diagrams, directions, regulations, etc.

**Apply** – Be able to apply ideas, procedures, methods, formulas, principles, theories, etc., in job-related situations.

**Analyze** – Be able to break down information into its constituent parts and recognize the parts’ relationship to one another and how they are organized; identify sublevel factors or salient data from a complex scenario.

**Evaluate** – Be able to make judgments regarding the value of proposed ideas, solutions, methodologies, etc., by using appropriate criteria or standards to estimate accuracy, effectiveness, economic benefits, etc.

**Create** – Be able to put parts or elements together in such a way as to show a pattern or structure not clearly there before; able to identify which data or information from a complex set is appropriate to examine further or from which supported conclusions can be drawn.

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