where did the name six sigma come from
Six Sigma The term Six Sigma (capitalized because it was written that way when registered as a Motorola trademark on December 28, 1993) originated from terminology associated with statistical modeling of manufacturing processes. The maturity of a manufacturing process can be described by a sigma rating indicating its yield or the percentage of defect-free products it creates. A six sigma process is one in which 99.99966% of all opportunities to produce some feature of a part are statistically expected to be free of defects (3.4 defective features per million opportunities). Motorola set a goal of "six sigma" for all of its manufacturing operations, and this goal became a by-word for the management and engineering practices used to achieve it.
Sigma Chi Harry St. John Dixon, a brother from the Psi Chapter at the University of Virginia who fought for the Confederacy, kept a record of all Sigma Chis within his vicinity on the flyleaf of his diary during the American Civil War.[26] He began planning a Confederate Army chapter of Sigma Chi with this information. On September 17, 1864 Dixon founded the Constantine Chapter of Sigma Chi during the Atlanta campaign with Harry Yerger, a brother from Mississippi who was in Dixon's division. Dixon stated the reasons for which the war-time chapter was created saying,