A check Sheet is a data collection tool that usually identifies where and how often problems appear in a product or service.
A Pareto Diagram is a bar chart that re-orders the categories so they are rank-ordered from the largest total occurrences to the smallest.
In the Analyze phase of DMAIC, we want to use the 6M’s in Six Sigma (Six Ms or 5Ms and one P or 5M1P). This helps root out defects.
Kaoru Ishikawa noticed that a lack of internal coordination affects a customer’s needs. Improved cooperation -> better quality & efficiency.
The Quincunx demonstrates that adjusting a process to “correct” it to the controls actually makes a process more out of control. I always remember it by recalling Bob Barker’s plinko board!