Businesses and corporations are susceptible to manufacturing defects and lack of analytic approach, just like the human body is prone to ailments and injuries. When human beings fall sick, they seek the help of a doctor. The doctor examines you and prescribes medicines along with suggesting measures to restore the human body functions to an optimum level. The same as how a doctor treats an unwell human, the corporations need professionals to heal ailing organizations.
These professionals suggest practices and preventative measures to get the organization to operate at an apex level. They implement problem-solving tools and execute advanced analytics and statistic approach to improve processes by finding and troubleshooting the errors. The professionals have the skills and training needed to use these problem-solving tools.
These experts are Six Sigma certified professionals. Six Sigma certification authenticates your level of training and testifies that you have the level of knowledge required to clear the exam.
The books mentioned here are efficacious in helping you understand Six Sigma, learn the methodology in-depth, and help you prepare for the certification exam.
1. The Certified Six Sigma Green Belt Handbook
Author: Roderick A. Munro, Govindarajan Ramu, and Daniel J. Zrymiak
This book is, as its name suggests, is a handbook that contains explanations of all Six Sigma concepts and principles at the Green Belt level. It contains terms, processes, and acronyms along with reference material. The book comes with two CDs comprising a video course, mock tests. It follows ASQ’s body of Knowledge for the Green Belt Certification and contains helpful additional material along with mock tests and a course.
This book gives you an overview of Six Sigma. It can also be used as a reference guide to answer the queries you may come across during your preparation for the exam. However, it is envisioned to be a handbook and is not a training guide for the exam. Be sure you get yourself the latest edition as its content is updated regularly to match the ASQ Body of Knowledge (BoK) for the Certified Six Sigma Green Belt, which is updated frequently.
2. Statistics for Six Sigma Made Easy! Revised and Updated
Author: Warren Brussee
This book by Brussee explains the statistical methodology and focuses on the techniques used in Six Sigma, elaborating them in a precise and easy to understand language. All of the formulas and tables that are fundamental to Six Sigma, including the DMAIC improvement cycle are described and demonstrated with real-world examples. The book is a guide to Green Belt training and a medium to find the right statistical tool to use in a Six Sigma atmosphere.
Statistics are crucial to Six Sigma. An understanding of statistics and the ability to apply them accurately are required to pass the exam. This book explains the most common Six Sigma tools along with the fundamental Six Sigma formulas and tables. It can be used as a reference guide while preparing for the exam but it does not contain any mock tests or questions.

3. Six Sigma Demystified, 2nd Edition
Author: Paul Keller
Keller’s book focuses on all the basic aspects, techniques, and tools of Six Sigma in clear and precise terms. This book is intended to help you develop your skills in Six Sigma by providing a framework for building the Six Sigma infrastructure and how to use the DMAIC methodology in your projects. Keller, in his book, gives a thorough blueprint for developing strategies, plotting growth, and performing at supreme efficiency to gain maximum profits. You’ll find clear guidance on the appropriate use of specific problem-solving tools.
Though the book is not claimed to be a training guide for the Green Belt certification, it does come with tests, quizzes, and even a final mock exam at the end, thus it incredibly helps the candidate to prepare for the examination.
4. Six Sigma for Powerful Improvement
Author: Charles T. Carrol
Carroll in this book demonstrates the DMAIC (Define-Measure-Analyze-Improve-Control) methodology of Six Sigma. Anyone looking forward to work with Six Sigma strategy needs to be familiar with this methodology. Although the methods and techniques illustrated, are precisely associated with the DMAIC methodology, they can be applied to various scenarios.
This book does not claim to help you pass the exam. Rather it focuses on a thorough understanding of Six Sigma and knowledge of the broader context in which it is applied. It comprises of 25 lessons occupying over 450 pages and provides a detailed knowledge in all stages of a project, from definition and analysis to measurement, improvement, and control.
The book comes with a CD containing a PowerPoint presentation explaining the DMAIC training course.

5. The Six Sigma Green Belt Handbook
Authors: H. James. Harrington, Praveen Gupta, and Frank Voehl
This handbook is a detailed, practical guide to becoming a certified holder of Six Sigma Green Belt along with a containing a chapter covering Black Belt tools.
This book helps Green Belt candidates to get elaborated knowledge on Green Belt Basic Skills and Tools sections, while more skilled readers can benefit from the techniques on how to successfully lead Six Sigma teams and how Green Belts can work in collaboration with Black belts. The chapter explaining how to build teams is worth the price of the book.
Illustration of Six Sigma software demonstrates how to use macros and templates and offer exercises to direct the candidates through these processes.
This handbook contains bundles of information. Whether you are a Six Sigma aspirant or using it as a general reference guide, this book is an exceptional choice for all candidates.
Conclusion
None of the above-mentioned books is a preparation manual for the Six Sigma exam. Understanding the Six Sigma methodology requires more than cramming of test questions from mock exams. One needs to get a comprehensive understanding of the methodology involved, after which clearing the exam should not be a hard nut to crack.
These books help to understand the aspects of the Six Sigma methodology. It is recommended for you to pick those which are suitable for your level of knowledge and will complement other training means.
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