ASQ® CSSYB Body of Knowledge 2022 – What is New?

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The American Society for Quality (ASQ) has updated the body of knowledge (BoK) for its Certified Six Sigma Yellow Belt (CSSYB) certification. The new BoK will be tested starting with the September 2022 testing window.

You can view item by item comparison with the 2015 version of the body of knowledge in the following document.

CSSYB Body of Knowledge Map 2022

The below table compares the number of questions in the exam from each section in 2015 and 2022 version of the ASQ CSSYB Body of Knowledge.



2015 Body of Knowledge

2022 Body of Knowledge



Six Sigma Fundamentals





Define Phase





Measure Phase





Analyze Phase





Improve and Control Phases




Generally there has not been any significant change in 2022 version of the CSSYB Body of Knowledge. Some key changes are listed below:

  • For the CSSYB exam the numbers of multiple-choice questions have been increased from 75 to 80.
  • Some new topics have been added to the body of knowledge. For example: Supply Chain Management, 8D, Corrective Action, Preventive Action, Work Instructions and SOPS,
  • Increased the cognitive level for some topics (e.g. from Understand to Apply)
    In addition, for some topics the subtext has been revised
  • The number of questions from some sections have been revised, as shown in the table above.

Six Sigma Yellow Belt (CSSYB)

CSSYB Exam Preparation Online Course - Plain and Simple Language.

Six Sigma Green Belt (CSSGB)

Fully Aligned with the internationally accepted LSSGB, CSSGB 2022 Body of Knowledge.

Six Sigma Black Belt (CSSBB)

Certified Six Sigma Black Belt Course in Plain and Simple Language - LSSBB, CSSBB Exam Preparation Online Course (2022 BoK)

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