Lean is an ever evolving philosophy based on proven principles and practices aimed at the elimination of waste (improving efficiency) with the objective of making every step, task, & activity create value for the customers. Lean is a continuing process of change involving everyone in the organization. Lean principles originated at Toyota.
Six Sigma is a data driven problem solving approach with the objective of increasing profits by reducing the defects (improving effectiveness) in a process. Defect reduction happens in two ways - first, reducing the variation in the process, second, by moving the actual mean closer to the target mean.
Six Sigma is all of the following
Metric: 3.4 defects per million opportunities
Methodology: DMAIC / DMADV frameworks
Management System: all business units are aligned to key improvement efforts
Philosophy: encompasses all of the above and a state where it becomes a way of life.
Lean Six Sigma
Lean Six Sigma is a combination of tools, techniques and best practices from both Lean and Six Sigma philosophies with an objective to simultaneously improve both Efficiency and Effectiveness of a process.
An application oriented question on the topic along with responses can be seen below. The best answer was provided by R Rajesh on 30th September 2018.
Applause for all the respondents- Manjula Pujar, Sitaram, Tina Arora, Saranya Subramanian, Yogesh Rathod, Manoj Kumar Alagesan, Rajesh Chakraborty, Kalpesh,
Q. 97 Lean and Six Sigma are two different approaches for process excellence, where Lean focuses on efficiency and Six Sigma focuses on effectiveness. In the more recent times, Lean and Six Sigma have been combined to form Lean Six Sigma. What are some of the advantages and disadvantages of combining the two approaches? Highlight with relevant examples.
Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday.
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