There was a time when "Six Sigma" was all the statistical analytics rage for everything and anything corporate. However, if one already knew statistics they'd e

There was a time when "Six Sigma" was all the statistical analytics rage for everything and anything corporate. However, if one already knew statistics they'd encounter a franchise branded school of terminology, different formulas than the accepted standards, and their own separate "z-tables" that apparently backed in corrections for their use of non-standard formulas. It was a hugely successful re-branding of standard statistics with a branded hierarchy of made up human hierarchies and Scientology-level made up technical terms. All the "Six Sigma Black Belts" - an actual title in corporate pointy head world - are 1000% useless now, unless they are at some dinosaur still following that nonsense. This is how corporations and the will to profit undermines first principal knowledge and leaves a wake of fake education that ultimately needs to be unlearned or unwisely held as a fragment of useful adrift in an island of potential non-logical nonsense