Impact Matrix

A chart designed to balance each idea between its potential impact/value vs. its difficulty/complexity to implement. It's also known as a PICK chart that is an acronym referring to the 4 quadrants of Potential, Implement, Consider, and Kill. It's often used in the Improve phase of DMAIC or during any brainstorming session when multiple ideas need to be evaluated and prioritized.
Related StatStuff Video: 
   -Section 7-Improve Phase, Lesson #6 - Prioritize Solutions with an Impact Matrix