before i only heard about the SIX SIGMA as a managment method after had lacture I start know deeper about it.
From my understanding, six sigma is a quality mgt which uses statistical methods to seek perfect manufacturing,minizing costs,increasing productivity and put customer satisfaction at first place.
when sigma figure goes up, variation goes down.
traditional quality managment always focus on results, they ensure the quality by emphasizing on final product checking and customer service whlist six sigma emphasize on actual causes of these variation. Quality is maintained by improving the process saving original cost rather than checking the final product strictly.Because during the production process these waste products already make a loss, after service will make another amout of costs.