Six Sigma Certification: Your Complete Guide to Quality Management Excellence
Six Sigma is a comprehensive, world-renowned process improvement, data-driven methodology that focuses on eliminating errors, decreasing variation, and increasing the quality of processes in both small and large businesses. It was developed by Motorola in 1986 and made widely known by General Electric through Jack Welch's leadership in the late 1990s. Six Sigma is now used as a framework for companies of all types and sizes across many industries around the globe.
The term "Six Sigma" comes from the fact that it represents the statistical definition of a process with no more than 3.4 defects per million opportunities (DPMO) â essentially achieving near perfect quality through consistent execution of processes. Organizations that implement this method are able to produce measurable increases in efficiency, satisfaction of customers, and profitability.
Having a Six Sigma certification demonstrates that you have successfully demonstrated your knowledge and ability to apply this process to real business operations, thus making you a highly competitive asset to any organization whose goal is quality and operational excellence.
What are the Benefits of Six Sigma?
Business has become extremely competitive today and in order to remain competitive, companies cannot afford to have inefficiencies, waste or poor quality. Six Sigma provides organizations with a structured and proven way to identify root causes of problems and eliminate them permanently, instead of just putting in temporary solutions.
Many well-known companies including Toyota, Amazon, Boeing, Johnson & Johnson, Bank of America and thousands of other companies utilize Six Sigma principles to improve operational efficiency, reduce costs, enhance customer experience and create long-term sustainable growth. Certified six sigma professionals bring their analytical and results-driven mindset to organizations, which allows those organizations to directly benefit from improvements on their bottom lines.
Who Should Get a Six Sigma Certification?
A Six Sigma Certification is varied across almost every industry and job function, so it is beneficial for many individuals, including quality managers who want to formalize their experience, operations managers who are responsible for process efficiency and continuous improvement, project managers who would like to add data-driven problem-solving to their toolkits, employees in the manufacturing and production industries looking to reduce defects and waste, healthcare administrators who are concerned about improving patient care processes and limiting errors, IT professionals implementing process improvements with the delivery of technology, and business analysts who want to help their company become more efficient.
Six Sigma has no boundaries when it comes to industries - it is applicable in the following industries: manufacturing, healthcare, finance, logistics, retail, software development, and government.
The Belt Level Structure of Six Sigma
Six Sigma has a belt level, like martial arts, which indicates a level of proficiency and gives meaning to a level of instructions.
The first tier of Six Sigma is known as a White Belt; it provides a basic outline of six sigma as a methodology, concepts, terminology, and goals. It is ideal for those who promote Six Sigma projects, but do not lead the project. A person having a white belt will have no experience and have a basic understanding of the methodology.
The Yellow Belt signifies the most basic level of understanding in Six Sigma principles and tools. Yellow Belts assist in improvement projects, working alongside Green and Black Belts, by performing tasks such as obtaining and analyzing data and implementing improvements. Those looking to understand Six Sigma without overseeing any projects will find this level of Six Sigma to be suitable
The Green Belt is where it truly begins to get serious regarding Six Sigma expertise. As a Green Belt, you will lead small to medium-sized improvement projects within your own department/function with support from a Black Belt. Additionally, Green Belts should have a strong understanding of the DMAIC process and skills related to basic statistics. This certification is highly sought after by employers and job seekers alike.
Black Belt is the highest level of Six Sigma expertise. As a Black Belt, you will lead cross-functional, complex improvement projects, mentor Green Belts, and effect large-scale organizational change. In addition to having an advanced level of skill with statistical analysis, Black Belts also possess advanced skills in project management and change management. Therefore, Black Belt professionals have some of the highest compensation levels of any quality or operations position.
Master Black Belt is the ultimate tier of Six Sigma qualification, embodying the epitome of mastery of the methodology. The Master Black Belt develops and executes a comprehensive program of Six Sigma methodology deployment throughout the organization as well as trains and mentors Black and Green Belts and serves as the overall authority for Six Sigma methodology in the organization. Typically, a person pursuing Master Black Belt certification will do so after several years of experience as a Black Belt.
DMAIC is the framework upon which Six Sigma is built. The DMAIC structure provides a systematic and data-driven methodology for improving the performance of current processes. All Six Sigma projects will utilize this five-phased methodology.
Define (the first phase) is where the project team defines the issue being addressed, identifies what the customers want, and establishes the project objectives. The team will also work to create a visual representation of the current process for purposes of understanding that process in its existing state.
Measure is the next phase in the project where the team collects quantitative data on the current process and establishes a benchmark of performance. It is in this phase that the team has effectively quantifed the issue being addressed, identified key metrics and validated the measurement system that will be relied upon in future analyses.
The Analyze phase examines data to determine the root causes of defects and variations. The team will use tools and statistical analyses to analyze data from both a surface and underlying cause perspective so the solution developed addresses the actual issue versus an issue that appears on the surface.
The Improve phase is focused on developing, testing and implementing solutions to eliminate the root causes identified in the Analyze phase. During this phase, improvement ideas are generated, pilot solutions developed, and can be validated prior to full implementation.
The control phase will ensure the improvements achieved in previous phases continue to be sustained over a period of time. During this phase, control mechanisms will be put in place, standard operating procedures will be updated, staff will be trained on the new processes, and performance will be monitored to ensure an individual does not revert to the way they used to do things.
Six Sigma uses an array of analytical and quality tools as part of the DMAIC process; below are some examples:
Process Mapping and Value Stream Mapping: Used to visually depict flows of processes in order to find areas of waste and inefficiencies.
Cause and Effect Diagrams (a.k.a., Fishbone or Ishikawa diagrams): Help teams to systematically determine potential root causes of problems.
Pareto Charts: Based on the 80/20 rule these charts help to determine the 'vital few' causes that provide the greatest number of defects.
Control Charts: Allow for the ongoing monitoring of process performance and detecting when processes go out of control.
Hypothesis Testing: Uses statistical methods to confirm or deny assumptions made regarding root causes of a problem based on actual data.
Regression Analysis: Examines the relationship between variables to determine how changes in one variable will impact an outcome variable.
Failure Mode and Effects Analysis (FMEA): Proactively identifies potential failure points in a process as well as the risk associated with the failure.
Statistical Process Control (SPC): Monitors process variability through the use of statistical methods and provides timely feedback.
What Is the Difference Between Six Sigma and Lean?
Although Six Sigma and Lean are different methodologies, they can be combined to form Lean Six Sigma, which are two complementary methodologies that are often used in conjunction with each other. Six Sigma is primarily concerned with using statistical analysis to reduce defects and variation in processes, while Lean focuses on improving flow and simplifying processes by eliminating waste. The combination of the two methodologies creates a very powerful tool that allows businesses to reduce waste while at the same time improving quality, resulting in more efficient and sustained improvement than any of the individual methodologies can achieve on their own.
There are currently many different Lean Six Sigma credentials available; most organizations now offer such credentials that combine both Six Sigma and Lean methodologies, and these credentials are becoming increasingly common in todayâs job market.
Steps to Achieve Six Sigma Certification
Determine Your Desired Belt Level â To get started, you will need to first determine the belt level that matches your level of experience and your career aspirations. Most individuals aspiring to earn a Six Sigma certification will likely start with a Green Belt, as this belt level provides a solid foundation upon which you can base your future projects.
Thorough Understanding of the DMAIC Process â The method of Six Sigma is largely based on DMAIC, and you should be sure to have a complete understanding of each phase in the DMAIC process (i.e., what tools were used in the various phases, and what decisions need to be made in the various phases, etc.) before proceeding with Six Sigma certification.
Familiarize yourself with statistical tools- Six Sigma uses a significant amount of data and statistics, so you should find yourself learning about control charts, hypothesis testing, regression analysis and process capability studies, plus many software tools for statistical analysis like Minitab, which is used extensively in the industry for this purpose.
Gain experience- in applying Six Sigma to real-world projects. You'll have an advantage on the exam as well as further experience with Six Sigma, because many certification organizations require documented project experience as an objective of certification.
Enroll in a well-organized training program. A Six Sigma training program, delivered by experienced instructors, will cover all of the fundamental concepts, tools and methodologies with the right level of mastery. Traincape Technology provides Six Sigma training delivered by experts at all belt levels and with practical examples, project support and exam preparation.
Do practice questions regularly to test your knowledge and confidence with the exam format as well as identify any areas requiring additional focus before taking the actual exam.
Tips to Pass Six Sigma Certification
The following tips can help prepare someone to pass their Six Sigma certification exam. First, they should focus on the reasons behind the different tools and techniques in comparison to just memorizing the formulas. One should also know which tools are used for each of the phases in the DMAIC process and why they are appropriate for the current phase. Very important will be the mathematical concepts being tested; most of the exam revolves around statistical concepts. For this reason, students will spend time fine-tuning their process capability and developing their ability to interpret a control chart as these will both appear many times on the exam. Common cause variation and special cause variation are key concepts that will be evaluated throughout your entire Six Sigma experience. Therefore, one's understanding of these concepts will help build one's foundation as they proceed through their Six Sigma training.
Thirdly, they should practice analyzing case studies and other real-world scenarios because the majority of Six Sigma testing is scenario-based. Lastly, they will want to know what the criteria are for good project selection; this will be essential for understanding how to create a project that will qualify for Six Sigma from the very beginning.
Six Sigma Certification Offers a Wealth of Career Options and Salary Potential
When you become certified in Six Sigma, you have numerous opportunities for employment throughout many industries and job types. As a Quality Manager, for example, you will manage all the quality systems in the organization while also implementing continuous improvement programs. If you are a Process Improvement Specialist, you will look for ways to eliminate waste or redundancy within processes to help improve how efficiently and effectively an organization operates. An Operations Manager applies the Six Sigma tools to improve production, minimize expenses and deliver better services to customers. Business Analysts use data analysis techniques to improve their companyâs business processes and results. Project Managers combine the methodologies of Six Sigma and Project Management to achieve measurable results with their projects. Lean Six Sigma Consultants help organizations develop and implement quality and process improvement programs.
Professionals holding a Six Sigma Green Belt can expect to earn between $75,000 and $100,000 annually, while those with a Six Sigma Black Belt can earn between $100,000 and $150,000 or more per year, depending on the industry in which they work and how many years of experience they have. In India, the salary range for Six Sigma professionals is between âš6,00,000 and âš20,00,000, based on Six Sigma certification level and work experience.
Recognized Six Sigma Certification Bodies
Six Sigma certification is available from various organizations, each having a different examination format and requirements for certification. The most recognized certification body globally is The American Society for Quality (ASQ). They offer both Green Belt and Black Belt certifications, with stringent requirements regarding certification examinations, as well as project experience.
In addition to ASQ, there are several other organizations that provide recognized certifications in Six Sigma (Lean) Six Sigma, including the International Association for Six Sigma Certification (IASSC) and The Council for Six Sigma Certification (CSSC). All three of these organizations are internationally recognized by the Six Sigma community. Also, numerous universities and training agencies provide Six Sigma training in conjunction with internationally recognized organizations.
In conclusion, Six Sigma represents much more than a credential; it is a way of thinking about the work that you do and is a career-specific skill set. In today's world, where more and more organizations are using data to drive decision making, the professional that utilizes Six Sigma principles to eliminate waste, reduce defects and enhance business processes are very highly sought after by their employers.
Therefore, whether you are looking into obtaining a White or Yellow Belt in Six Sigma or are developing your skills to achieve a Black Belt, it is a sound investment that will create returns on your investment throughout your professional career.
