Value Stream Mapping is a material & information flow map. It’s also a tool for visualizing processes that need improvement.
A Cause and Effect Diagram (aka Ishikawa, Fishbone) showing possible causes (process inputs) for a given effect (process outputs).
Kaizen means improvement on a continuous basis. Originated in Japan, Kai means change and zen means for good.
Cost of Poor Quality (COPQ) is the cost associated with providing poor quality products or services to the customer.
Of the four Scales of measurement (Nominal, Ordinal, Interval, and Ratio), Ratio scales are ideal for Six Sigma projects.