Lean Six Sigma Yellow Belt

“Lean is learning to identify waste. The moment you start seeing waste, everything else will take care of itself. Until you see waste in everything, you can’t understand Lean”

Paul Akers, Author American Businessman


Who is it for?

The Lean Six Sigma Yellow Belt certification is issued to employees who have basic training in Six Sigma quality improvement methodology and participate in related projects. They have a basic understanding of the methodology and assume a supporting role for both Green Belts and Black Belts within a Six Sigma team. Like Green Belts, they usually also have other non-Six Sigma related responsibilities within their job functions.

What you will learn

  • Basic knowledge of Lean Six Sigma
  • Set up a complex problem in a structured way
  • Elements of descriptive statistics and process capability
  • Analyzing a measurement system
  • Set up an inspection plan

Course contents

Below is the Body of Knowledge for the Yellow Belt certification:

  • Basics of Six Sigma
    • Meaning of Six Sigma
    • History of Six Sigma and Quality Management


  • Basics of Lean
    • Understanding Lean
    • History of Lean
    • The 7 wastes
    • Make the value flows


  • The Lean Six Sigma approach
    • When utilizing Lean and when Six Sigma
    • The Problem Solving Strategy Y = f(x)
    • The DMAIC and DMADV approaches
    • Roles & Responsibilities within a Lean Six Sigma organization


  • The Voice of the Customer (VOC)
    • Collecting client’s expectations
    • The Kano model


  • Define the process
    • Preliminary Process Mapping
    • Building a flowchart


  • Understanding Quality
    • Critical to Quality Characteristics (CTQ’s)
    • Costs of Poor Quality (COPQ)


  • Define the problem
    • Problem Statement
    • Introduction to PFMEA


  • Basic Six Sigma metrics
    • DPU
    • DPMO
    • FTY
    • RTY
    • Cycle time


  • Project Management
    • Goals statement
    • Project scope
    • Business case
    • Planning
    • Stakeholders analysis
    • Project metrics
    • Project team
    • Project Charter


  • Team Management
    • Roles definition
    • Team creation
    • Leading a Team


  • Selecting Lean Six Sigma projects
    • Prioritization matrix
    • Pareto Chart (80:20 rule)


  • Mappa di processo di dettaglio
    • SIPOC
    • Spaghetti Chart
    • Value Stream Mapping 
    • Gemba Walk


  • Data collection
    • Types of Data


  • Six Sigma Statistics
    • Basic Statistics
    • Descriptive Statistics
    • Normal distribution and Normality tests


  • Process Capability Study
    • Continuous data
    • Attributes data
    • Short vs Long-term Capability


  • Graph Analysis
    • Histograms
    • Box Plots
    • Run Charts


  • Measurement System Analysis
    • Precision & Accuracy
    • Bias, Linearity and Stability
    • Gage Repeatability & Reproducibility
    • Variables & Attributes MSA 


  • Sampling
    • Sample size


  • Statistical Process Control (SPC)
    • Overview of SPC Charts


  • Six Sigma Control Plan
    • Elements of a control plan
    • Elements of a response plan


Course information

Face to face

At the client location




24h, or 3 days

Final Test

1h, 50 questions


The Lean Six Sigma Yellow Belt certification course can be delivered in different formats:

  • Face-to-face, at the client location
  • Online, through a mix of webinars and remote exercises
  • Blended, through a mix of face-to-face lectures and webinars

We think that the online mode has several advantages in terms of learning methods, flexibility and costs and is therefore especially recommended for corporate training groups.

Training Material

The teacher will provide students with the slides necessary for learning the theoretical part, in Italian. In addition, he will provide an English language manual as additional support material.

For the entire duration of the course, the teacher is available to answer any questions or doubts via email, or by setting up a short videoconference with the student.


The course has a total duration of 24 hours (or 3 full-time days).

Test methods

The exam can take place in written form (in person) or in digital format (remotely) by accessing a dedicated platform. The student will have to answer a series of 50 questions in a time limit of 1 hour. To pass the exam, the student must correctly answer at least 70% of the questions.


Costs vary by format (face-to-face or remotely) and by groups. We also provide individual courses upon request.

To find out the costs, contact us via email at

[email protected] 


Accialini Consulting is internationally accredited by the Council for Six Sigma Certification

The Council for Six Sigma Certification

Discover the other certifications

If you start from scratch and prefer to approach the Lean Six Sigma methodology step by step, then the White Belt certification is the one we recommend.

Do you want to improve your knowledge? Then the Green Belt certification is the one for you!

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