A business assessment process is a continual cycle looking at your current situation, where you want to be, and how you can get there.
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.
In professional terms, Hoshin Kanri is a method that helps build strategic planning to setup and achieve goals with minimum or no waste to resources due to lack of communication between the management and the operations staff.
Deploying Six Sigma management to a company can feel like a daunting task. Change must be made at every level of the company.