Let's test our knowledge and say what is truly the difference between Lean and Six Sigma?

LEAN - Reduce waste in the process.

SIX SIGMA - Reduce variation in the process.

Six sigma is a data driven approach to improves processes or assess health of any process or production system. Idean is to measure process using various statistical methods.

Lean is a philosiphy which focusses on removing the waste in a process/production system to improve the efficiency and effectiveness. It focuses on 7 type of waste time and enhance the value added quotient by removing the non value added activities.