All Six Sigma exams require knowledge of the Founding Fathers of Six Sigma and the Quality Movement. Here is a great study guide & reference for you:
Genichi Taguchi contributed several important concepts to the field of quality including the Taguchi Loss Function and Taguchi Robust design.
After you are prepared for success in the role of a Six Sigma Black Belt you may begin to wonder How to Get a Job as a Six Sigma Black Belt.
Use the Main Effects Plot to determine the relative impact of a variety of inputs on the output of interest.
One of the questions I often get is “Now that I am a certified Six Sigma Black Belt, How to Prepare for a Job as a Six Sigma Black Belt”