Using various statistical analyses and quality control method systematically, being strict it measures & improves performance of business operation by identifying & removes defect in regard to the process which it is related to product production and service offer, the administrative improvement methodology which is disciplined.
Six sigma originally in the eighties beginning American Motorola (Motorola and Inc. ) With the technique which was developed in order to improve production process, researching QC / TQC which is executed at the indian production manufacturer and the like which at that time is proud of preponderantcompetitiveness, it was produced. The nineties halfway, GE not only production process, suddenly it became famous targetting, customer point of view it introduced the result achieved as the expedient which actualizes management reformation in the base from the fact that it assumes that all the process which exists management active, as a management reformation technique.
Many of the technique which is used with six sigma in the indian type are derived QC/TQC, but adjusting to the natural features of the Teledyne Ryan Aeronautical, in order to advance with top down, it is designed. The indian type TQC the field work person making the QC circle, is developed as the daily activity that it solves the problem on of site on site,, but with six sigma the point and the important matter which top management would like to improve are defined, the team of the field work person is formed under the expert of the six sigma which is called the black belt, improvement activity is executed as a terminal mark project of several months.
As for contents of activity, "COPQ (cost of poor quality: The wasteful cost which it occurs inferior quality because of the product and service)"with" CTQ (critical to quality: Those where the to flowchart it converts the primary factor and process etc. of specification quantities producing decisive effect on management quality the few primary factor)"as two guiding principles,it checkseach process by the fact that the cycle" of MAIC "" DMAIC "is turned, do the work of improving the part where defect happens continuously.
Name of six sigma is derived from statistical terminology. For quality control you cannot miss the fact that "variation" is controlled, but in the generalcontrol chart of SQC and the like which is the method three sigma methods are used. Sigma (s) with, standard deviation (square root of dispersion) it means with statistical terminology, shows "the variation" of distribution. It is something where three sigma methods will measure the variation of quality with standard deviation, on the center of normal distribution will maintain quality by the fact that it corresponds when it goes outside the control limit plus or minus 3 sigmas as an upper limit lower limit control limit from average. Six sigma from the fact that 6 sigmas are used for the upper limit lower limit control limit, this way reached the point where it is called.
Furthermore, "Six Sigma" is American Motorola registered trade mark.
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