* Article Question: According to the author’s standpoint, describe what are the differences between theory/application/focus factors when comparing six sigma, lean and theory of constraints. Please elaborate your answer without writing article sentences, use you own words and demonstrate a comprehensive analysis.
Making a comparison with a simple standpoint, the six sigma’s methodology is used to incremental improvement of existing processes, as it is the six sigma main tool, DMAIC. This tool is a strategy based on statistical quality, which gives much importance to data collection and accuracy of the data as a basis for improvement.
Each step in the methodology focuses on obtaining the best results possible to minimize the possibility of error. Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes. It uses a set of quality management methods, including statistical methods, and creates a special infrastructure of people within the organization ("Black Belts", "Green Belts", “Yellow Belts”, etc) who are experts in these methods. Each Six Sigma project carried out within an organization follows a defined sequence of steps and has quantified financial targets (cost reduction or profit increase). This methodology is focused on issues, such as for example, the improvements in the molding process of producing a large-scale casting where you have to comply with a material’s specification but in a statistical environmental in control where the best option is the reduce the variation in order to reach the critical Cpk analysis’ value of the process and obtaining the secondary impact in less wastes, fast throughput, less inventory and other aspects relationed. By the other hand, Lean thinking or Lean Manufacturing lies is a production perform that considers the expenditure of resources for any goal other than the creation of