Lean | Six Sigma | |
Theory | Eliminate waste | Reduce variation |
Objective | Deliver value to the customer | Deliver value to the customer |
Focus on | Value stream mapping | Variation in process (Problem focused) |
Assumptions | Improvement in waste removal targeting business performance | Reduction in the variation of all input processes, improves system output |
Variable tiny improvements make a better analysis system | Existence of the problem | |
Goal | Increase speed & efficiency | Improve quality with low cost |