SIX SIGMA
» Introduction of SIX SIGMA
- Sigma is a Statistical unit /metric of measurement which reflects the capability of the process
- Is a management tool for structured improvement
- Six Sigma is consistency based thinking
- A defect is anything that causes Customer dissatisfaction.
Six Sigma is the most important initiative GE has ever taken…it is part of the genetic code of our future leadership.
-- Jack Welch, Former CEO - General Electric
You can see the “before” & “after” of an organization when Six Sigma grabs hold & takes place.
--Richard Johnson, Director of Six Sigma
Allied Signal Successful leaders have made Six Sigma their way of conducting business
--Azim Premji, Chairman Wipro Limited :
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- Understanding Sigma
Process
Defect
Variation
- Standard Deviation – Sigma
- Six Sigma’s goal is the near elimination of defects from any process, product, or service. – at 6 Sigma you get 3.467 defects per million opportunities.
Originated at Motorola in the early 80’s
In other words, process standard deviation (s) should be so less that your process performance can fit 12s within the customer specified limits.
So, no matter how much your process deviates from target, you always meet what customer wants.
That means a process efficiency of 99.99966%
DMAIC applies to an existing process that needs improvement.
- It’s best applicable to continuous defect reduction in cross-functional / uni-functional environment
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