Control the Causes and Monitor the Outcome

A huge part of any Lean Six Sigma project is discovering the critical few xs (causes) that drive your Y (output) metric of interest. Therefore, your work in the Control phase begins by listing the xs you’ve found to be important, these are the objects of the Control Plan we will show you how to build at the end of this chapter.
Yes, you will want to monitor your Y and make sure it continues at