1.What is Six Sigma
Term 'Sigma' derives from the Greek letter σ is the Greek letter transliteration of the Chinese, statistics used to indicate the standard deviation, that is, the degree of data dispersion. Continuous measurement of the quality characteristic: The 'σ' measure on the quality characteristics of the overall degree of deviation from the target. 
σ (Sigma) for statistical symbols, representative of the observed variations in process or product level;
The larger the numerical value σ, the greater the degree of its variability;
σ level of quality can be measured, the levels that have a higher chance of the shortcomings of the lower;
Six Sigma is a data-based, the pursuit of almost perfect quality management practices.
Several Sigma is a statistical measure that quality. Any procedures or processes that are available in several Sigma. Six Sigma can be interpreted as an opportunity for every one million in 3.4 chance of error, that is, the passing rate is 99.99966%. Sigma of the three, only 93.32 percent pass rate. Six Sigma focuses on the management of all work as a process, method of analysis used to quantify the impact of the quality of process factors, to identify the most critical factors to be improved so as to achieve higher customer satisfaction.
Six Sigma in the mid-nineties from a total quality management approach evolved into a highly effective business process design, improvement and optimization techniques, and provide a series of equally applicable to the design, production of new products and services development tools. Then with the globalization of products and services, e-commerce strategies go hand in hand, as the world's pursuit of management excellence in the most important strategic business initiatives. Six Sigma to become the customer to determine the main objective of corporate strategy and product development designed to scale, sustained progress in the pursuit of a quality management philosophy.
Six Sigma does not require a deep understanding of technical or statistical background, in fact, 'What is Six Sigma' can be answered in different ways, as we will be dedicated to the definition of Six Sigma is: Solving function Y = f (X1, 2,3 ... ... k) the process!
2.What is a Six Sigma level
3.What is the path of DMAIC methodology
Six Sigma is not only a concept, but also a way to breakthrough performance. Philosophy into action it will be the goal a reality. This is to improve the methods of 6 Sigma DMAIC and Design for Six Sigma methods DFSS. DMAIC refers to the definition (Define), measurement (Measure), analysis (Analyze), improve (Improve), control (Control) consisting of five stages of process improvement methods, generally used to improve existing processes, including the manufacturing process, services, as well as the course of its work and so on. DFSS is the Design for Six Sigma abbreviation refers to new processes, new product design method.
A complete Six Sigma improvement projects should be completed, 'the definition of D', 'Measurement of M', 'Analysis of A', 'to improve the I' and 'control C' 5 stages of the work. Each stage of work by a number of steps to pose. Although, Motorola, GE, 6Sigma Plus, Smart Solution, such as the use of different working steps, and some 6-step, some using 12-step or 24 steps. However, the main content of each stage is more or less the same. The main work of the various stages as follows:
DMAIC process of the major work of the various stages
A range of tools at each stage by stage approach to support the goals. The following table lists the use of each stage of the typical methods and tools:
DMAIC process to support the typical methods and tools:
4.The main features
6sigma in the promotion, the enterprise can be truly great results, must be 6 Sigma as a management philosophy. This philosophy, there are six important characteristics, each characteristic of the back there are a lot of tools and methods to support:
(1)Customer-centered
Six Sigma to the customer first. For example, in measuring the performance of departments or employees, we must stand in the perspective of customers. Customer needs to know what is, and then the demand for these companies to set goals, measure performance.
(2)In accordance with the management of information and facts
In recent years, although the importance of knowledge management gradually, but most enterprises are still based on opinion and assumptions to make decisions. 6 Sigma is the primary rule to clarify, it is necessary to assess the performance of what should be done to measure (measurement), then the use of information and analysis to understand the performance gap between the numbers closer to our goals.
(3)Focus on process
Whether the design of products, or improve customer satisfaction with the 6 Sigma process as their means of transport to success is to provide customers with value and a competitive edge.
When the smaller process variation is not consistent with the goods / non-performing goods the fewer chances there, customers will lower the potential risks, customer satisfaction will go up, which is more and more customers attach importance to the root causes of 6Sigma.
(4)Active Management
Enterprises must often take the initiative to do those ordinary things companies often ignore, such as setting ambitious goals, and keep under review; setting clear priorities; emphasis on prevention rather than fire fighting; often questioned, 'why should we do' rather than regular 'We are doing so.'
(5)To work together without boundaries
Improvement among the various departments within the company, between companies and suppliers, companies and cooperative relations between the customers can bring enormous business opportunities. Six Sigma to stress-free boundaries, to let employees know their organization should be the general direction of how to co-ordinate and to measure the flow of business, between the activities of various departments, what relevance.
(6)The pursuits of perfection, but at the same time tolerate the failure
Six Sigma in companies, employees can continue to pursue a better service, and cut costs. Enterprises continued to pursue a more perfect, but can also accept or deal with occasional setbacks, learn from our mistakes.
In short, Six Sigma is a strong leadership and the vitality of the grass-roots participation in combination with the system. In addition, the benefits of Six Sigma is not only reflected in the financial, the Six Sigma companies employees at all levels will find a better understanding of customers, more clearly the process of measurement is more meaningful and more powerful tools to improve their work more effective, less chaos and more return often.
