The "Big 3" whole-company improvement technologies -- Lean Thinking, Six
Sigma, Theory of Constraints -- are individually so powerful that advocates can
easily become defensive; "my technology is better than yours."
A sign of maturity in the movements is the recognition that each brings things
to the table that the others do not; and the combination is more powerful than
the independence. For example, managers trained in TOC know that the Theory of
Constraints is the ultimate "mixer" -- it pulls other technologies in to an
implementation, in a focused manner and with a high degree of leverage that
helps each to achieve better results than they could have individually. Everyone
wins.
Six Sigma: Six Sigma Training Certification for Green Belt, Black Belt and Master Black Belt including implementation of 6 Sigma techniques and Lean Manufacturing, the DMAIC ( Define, ...
SPC program calculates sigma (standard deviation) from 3 to 6 units in .5 unit steps. In other words, 6 Sigma. It allows for user definable design margin settings.
... Six Sigma" means a failure rate of 3.4 parts per million or 99.9997% perfect; however, the term in ... every million you produce vs. 3.4 defectives if you are at the six sigma level. ...