What is lean
Lean is nothing but waste reduction toll in any organisation
It is non-value added activity, but indirectly it helps for increasing the revenue and growth of the organisation
If waste production will be less it means defective parts are less production means non-defective products or quality percentage is increasing so lean has its importance
Six Sigma
Six Sigma is the statistical approach for eliminating the defects in the process
it is a value-added activity
it is a set of tools and techniques for process improvement