Six Sigma is a data driven, customer focused, and result oriented methodology which uses statistical tools and techniques to systematically eliminate the defects and inefficiencies to improve processes. It is a systematic method to measure and analyze the business processes to identify critical factors affecting business results, thereby improving the processes and establishing controls around the improved processes.
Six sigma is a widely accepted quality concept in the corporate world today. Six Sigma started its journey in the 1980s as a data driven method to reduce variation in electronic manufacturing processes in Motorola Inc. in the USA. Six Sigma became famous when Jack Welch made it vital to his successful business strategy at General Electric in 1995. Today it is used as a business performance improvement methodology all over the world in diverse industry including general manufacturing, construction, banking and finance, healthcare, education, government, KPO/BPO, IT/ Software. At present IT/ ITES sector companies are dynamically implementing Six Sigma and it is no more confined into manufacturing sector
The term ‘six sigma’ comes from statistics and is used in statistical quality control (SQC) which evaluates process capability i.e. the numerical measure of the ability of a process to meet the customer specifications. It was originated from terminology associated with manufacturing which refers the ability of manufacturing process to produce a very high proportion of output within specifications. The sigma rating of a process indicates its yield or percentage of defect-free outputs it produces. A six sigma process is the one which produces 99.99966% statistically defect-free outputs which is equivalent to 3.4 defects per million opportunities (DPMO).
Six sigma uses a set of quality management and statistical methods and creates a team of experts within the organization (Executive Leadership, Champions, Black belt, Green Belt, Yellow Belt etc.) having specific skill sets required to carry out the six sigma project. Each six sigma project carried out within an organization follows a defined sequence of phases with quantifiable value targets e.g. reduction in process cycle time, reduce cost, increase in quality rating/ customer satisfaction index, reduction is defect rate.
6sigmastudy's widely accepted certifications help individuals and organizations complete projects with greater efficiency, increase ROI and customer satisfaction.
Many organizations around the globe adopted Six Sigma and Lean to increase quality of the outputs and to reduce cost by means of reducing defects and removing inefficiencies. There are numerous benefits of adopting Six Sigma.
Growing popularity and acceptability of Six Sigma and Lean has created a great demand for certified professionals in the job market. Grab the opportunity and join this growing community.
Six Sigma and Lean certified professionals help organizations with improved level of project management that leads to increased ROI.
6sigmastudy certified professionals help organizations with improved level of processes and quality outputs that lead to increased ROI. They have knowledge pertaining to and can anticipate issues related to the practical implementation of Six Sigma.
There are mainly two methodologies of Six Sigma namely DMAIC and DMADV.
DMAIC is a data-driven Six Sigma methodology for improving existing products and processes. The DMAIC process should be used when an existing product or process can be improved to meet or exceed the customer’s requirements. DMAIC methodology consists of five phases: D – Define, M – Measure, A – Analyze, I – Improve, C – Control.
DMADV is a common DFSS (Design for Six Sigma) methodology used to develop a process or product which does not exist in the company. DFSS is an application of Six Sigma which focuses on the design or redesigns of the different processes used in product manufacturing or service delivery by taking into account the customer needs and expectations. DMADV is used when the existing product or process does not meet the level of customer specification or Six Sigma level even after optimization with or without using DMAIC. DMAIC methodology consists of five phases: D – Define, M – Measure, A – Analyze, D – Design, V – Validate.
|Six Sigma||Traditional Quality|
|Decisions are driven by data||Decisions are taken based on a combination of data and 'gut feel'.|
|Control process inputs (Focus on X’s)||Inspection method (Focus on Y)|
|Structured use of statistical tools to help in problem solving||No formal structure exists for the application of tools|
|Structured training in applied statistics||Lack of structured training|
|Root cause approach||Band aid approach|
|Prevention over inspection||Inspection over prevention|