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Lean Six Sigma Black Belt
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What Is Six Sigma Certification?

Six Sigma certification is a verification of an individual's command of a well-regarded method of professional skills development. Certifications for Six Sigma training are awarded in levels using a belt classification system similar to the one used in karate training.

Six Sigma is a set of quality management techniques and tools developed in the 1980s and adopted by American corporations, including General Electric. Development of the Six Sigma system is credited to Bill Smith, a Motorola engineer, and the name was trademarked by Motorola in 1993.

There is no standard Six Sigma curriculum. Programs are offered by many colleges, online and on-campus, and are offered in-house by many corporations.

Key Takeaways

  • Six Sigma is a set of quality management techniques and tools that have been widely adopted by American corporations.
  • Six Sigma originated as a method of minimizing errors or defects in manufacturing processes.
  • It has since had a pervasive influence on management practices in the U.S. and abroad.

Understanding Six Sigma Certification

The name Six Sigma has its origins in a statistical method of modeling a manufacturing process that is as free as possible of errors or defects. In statistics, six sigma indicates a likelihood of 3.4 defects per million things produced. This is the ultimate level to strive for, ensuring error-free delivery of a product 99.99966% of the time.

Six Sigma training, therefore, focuses on the development of management processes that reliably lead to virtually defect-free results in manufacturing or in any business activity. It uses a number of statistical and data analysis tools to reach its objective.

The Six Sigma Belt Levels

The belt awarded with Six Sigma certification is relevant to the position in the business the employee occupies within an organization. They are earned through practical experience as well as course-based training.

  • A white belt is awarded for completion of an entry-level overview.
  • A yellow belt is awarded for assisting a project at a practical level.
  • A green belt is awarded for learning the principles of Six Sigma and implementing them under the guidance of a black belt.
  • A black belt plans and executes projects using Six Sigma principles.
  • A master black belt manages the implementation of Six Sigma projects across functions.
  • A champion is an upper-level executive who is responsible for the implementation of Six Sigma across all departments.

Many Six Sigma programs are offered by corporations and colleges. However, there is no standard curriculum.

Standards Are Lacking

There is no unifying standard or organization that sets a standard for Six Sigma belt certification. Each company or school determines its own criteria.

In some organizations, certification may require the successful completion of an test or a series of exams. In others, an individual must complete a number of Six Sigma-based projects. Certification services charge a fee.

Wed, 13 Jul 2022 03:03:00 -0500 en text/html https://www.investopedia.com/terms/s/six-sigma-certification.asp
Killexams : A Beginner's Guide to the Six Sigma Methodology
A wallet full of money is locked up with a chain and a padlock.

Image source: Getty Images

Six Sigma provides principles and methods to Improve work performance and drive leadership development. Use this guide to see if the Six Sigma process can benefit your organization.

With a name like 6 Sigma and certification levels that include yellow belt, green belt, black belt, and master black belt, it’s OK if your first thought is we’re talking about a super-secret martial arts fraternity. However, Six Sigma is a data-driven process to improve work performance that can benefit organizations and businesses of all sizes.

In this article, we’ll provide you a crash course in the Six Sigma process, covering its origins, principles, and methodologies. We’ll finish with a step-by-step process for how your company can use Six Sigma techniques to level up your performance metrics and create leaders ready to mentor rising talent in the strategy.

Overview: What is Six Sigma?

When Motorola faced rising warranty claims in the 1980s, company engineer Bill Smith brought the idea of Six Sigma to then-CEO Bob Gavin. Six Sigma would use specific tools and methods to reduce process variations and, in doing so, minimize errors and Improve customer satisfaction.

“Sigma” is a Greek symbol used in statistics to measure deviations from an average. Six Sigma uses a classic bell curve where the target outcome is in the center of the curve and the genuine distribution of outcomes aims to deviate no more than three sigmas in either direction.

If outcomes fall within these six sigmas of the mean, then the process is considered to have a low defect rate. In other words, the Six Sigma methodology aims to have only 3.4 defects for every one million outcomes, or 99.99966% defect-free products.

A blue graph displays a normal distribution with three deviations above and below the mean.

Bell curve demonstrating the allowed distribution for a process to meet Six Sigma quality standards. Image source: Author

By 1988, after implementing Six Sigma, Motorola became the first company to be awarded the Malcolm Baldrige National Quality Award. Since then, companies from retail to health care to banking have found success with the strategy.

Bank of America used Six Sigma to address customer complaints elevated to the executive level, which were numbering around 20,000 per year. The effort resulted in doubling the bank’s customer satisfaction metrics and over $2 million net financial impact.

By combining robotic technology and human procedures, Amazon has leveraged Six Sigma to reduce order fulfillment time from 90 to 15 minutes while maintaining minimal errors. This distribution improvement saves the company money while increasing customer satisfaction through faster delivery.

While the profit focus of Six Sigma may make the approach seem applicable only to for-profit companies, nonprofits can also benefit from the process. Six Sigma can help nonprofits Improve satisfaction levels, maximize the impact of their volunteers, or increase the number of donations they receive per appeal.

Akron Children’s Hospital in Ohio, for example, used Six Sigma to reduce the number of days it took to move food from its pantry to families in need from 92 to 40.

Friends of the Children in Portland, Oregon, found that staff had little time to mentor at-risk youth in the program, despite its being a key piece of the nonprofit’s mission. The organization used Six Sigma to review its project roadmap and internal processes to find administrative burdens and other elements cutting into staff time. This freed up hours for direct client services.

6 key Six Sigma principles

In a convenient twist of fate, six key principles guide Six Sigma methodology. Focusing on these principles, organizations can move closer to the six sigma level in their operations.

1. Focus is always on the customer

Six Sigma always focuses on the customer as it strives to Improve constantly. Deviations from a target represent instances where an outcome falls outside a customer’s expectations.

This could mean producing error-free products to increase customer satisfaction with their purchase or ensuring on-time deliveries to bolster customer loyalty. For a nonprofit, it could mean minimizing administrative inefficiencies to reduce overhead so supporters know a greater percentage of their donations are going directly to your cause.

The customer is the ultimate “why” behind Six Sigma.

2. Improvement is a continuous process

While Six Sigma focuses on one area of improvement at a time, companies that embrace the strategy look constantly for new improvement opportunities. An organization adopts the ethos that ongoing improvement is vital to its work. As soon as one process reaches the six sigma level of accuracy, it’s on to the next performance improvement plan.

3. Reducing process variation is critical

Errors are more likely to occur if different team members or divisions of an organization are performing a process differently. Six Sigma focuses on standardizing processes so it can reduce deviations from a target, which can result from varied methods.

For example, a business that provides quick oil changes for car owners might provide employees with a checklist that dictates the exact order each of a car’s fluids will be checked and replaced. By following that standardized process, an employee is less likely to forget to top off a customer’s windshield wiper fluid.

4. Eliminating waste enhances outcomes

Six Sigma works to identify superfluous actions within organizational processes. These wasteful steps can increase the time to complete a task, the likelihood of error, and the overall cost of the process. By identifying and eliminating waste, companies can reduce defects and create happier customers.

For example, let’s say the earlier oil change example had four employees checking each car. One checked windshield wiper fluid, one checked oil, one checked coolant, and another checked tire pressure.

Meanwhile, a line of customers waited for their turn. Instead of having multiple employees work each car, the business could empower each employee to run through the checklist on their own, enabling four customers to be served at a time instead of one.

5. Leadership development is crucial for continued success

Making progress within an organization feels great. But if only upper management at an organization is on board with the related changes, progress won’t be sustainable. Six Sigma stresses the importance of leadership development at all levels to ensure consistency across the organization and empower staff to be part of the change and embrace an improvement mindset.

To implement this, Six Sigma offers different “belt” levels to denote an individual's experience in the method. A company’s executive leadership team must identify the right talent for the right projects across the company’s hierarchy and provide them the tools and support they need to become effective leaders as they move up the different belt levels. These levels include:

  • White Belts: Newbies to the Six Sigma method, white belts receive a few hours of training as a crash course introduction to the concept, but aren’t directly involved in Six Sigma projects regularly.
  • Yellow Belts: Yellow belts are a tad more involved than white belts. They understand Six Sigma and may play a supporting role in process mapping or improvement tasks within a larger project.
  • Green Belts: Green belts are mentored by someone with a sigma black belt. They use Six Sigma methods daily in their work and may take leadership roles on some improvement projects.
  • Black Belts: Six Sigma black belts are typically the leaders for improvement projects. They have advanced knowledge in team management, Six Sigma project tools, designing processes, and using software to conduct statistical analysis.
  • Master Black Belts: Master black belts are the highest certification in the Six Sigma methodology. They manage black and green belts, mentor and train others in Six Sigma, and consult on particularly challenging projects.

6. Define and control all processes

You can’t fix a problem unless you identify and describe it. All processes within an organization need to be documented and analyzed. This exercise will reveal where the organization can make improvements and how those improvements will be measured. It will also allow teams to control the process once the improvement has been reached to ensure it remains within the six sigma range.

2 main Six Sigma methodologies

Whether you’re looking to Improve an existing process or develop a new one, you’ll follow one of two methodologies for implementing Six Sigma: DMAIC or DMADV, explained in more detail below.

These methodologies both incorporate a variety of techniques learned through Six Sigma training, such as:

  • Kaizen, a strategy that emphasizes continuous improvement
  • 5S System, a method for reducing waste through five steps (sort, set in order, shine, standardize, sustain)
  • Root Cause Analysis, “why” questions that uncover a problem’s root cause
  • Poka-yoke, an identification and removal of inefficiencies and possibilities for human error
  • Value Stream Mapping, a documentation of a process’s material and informational flows to identify waste and inform future projects

They also lean on tools, such as scatter plots, histograms, flow charts, check sheets, and control charts.

1. Define, Measure, Analyze, Improve, Control (DMAIC)

DMAIC is used to Improve existing processes performing below expectations. The methodology includes these components:

  • Define: Establish your customers, what they expect, and how your current process is missing the mark for them. Set your target goal for improvement.
  • Measure: Collect data about your current process to uncover what needs improvement and to provide a baseline that you can use to compare future results.
  • Analyze: Dig deeper into your data to identify the root cause of your problem. Ask why it occurs and whether it’s an ongoing issue or a more sporadic event.
  • Improve: Brainstorm solutions for your problem and pilot them to see if they reduce process defects. Involve the right people for the right tasks.
  • Control: Once a solution has been tested and deemed effective, establish standardized processes, document the steps, and train all employees in the method. Ensure the fix will be sustainable.
Each of the DMAIC steps are written and numbered in a circular infographic.

DMAIC is a methodology that can be used repeatedly for new initiatives as a part of your company’s continuous quality improvement. Image source: Author

2. Define, Measure, Analyze, Design, Verify (DMADV)

DMADV is used to develop new processes that will launch and operate at six sigma levels. The methodology includes the same first three components as DMAIC but swaps the final two to:

  • Design: Brainstorm the specific steps, people, and materials needed to implement your process. Document the proposed strategy and seek input from involved parties.
  • Verify: Pilot the process to identify any needed tweaks. Standardize the process and train all employees once it is finalized to ensure sustainability.

How to use the Six Sigma process and techniques in 4 steps

With so many techniques, tools, and methods to consider, Six Sigma can feel like an overwhelming process to a beginner. However, if you’ve reached this point in the article, you’re well on your way to at least self-identifying as a Six Sigma white belt.

As you dive deeper into Six Sigma training, you’ll learn exactly when and how to use different tools or techniques. Overall, however, the process falls into four simple steps.

1. Align your team around your improvement goal

An organization’s executive leadership team reviews all improvement opportunities and identifies which would have the greatest impact on the company. Champions for those opportunities then set strategic goals to share with the wider team.

2. Mobilize your team to act on your goal

Six Sigma black belts lead the charge for advancing improvement projects. They identify the right people to enlist and move through the DMAIC or DMADV methodology. They constantly use data to inform their decisions and measure progress.

3. Accelerate your project toward results

Improvement should happen quickly. Master black belts help manage the clock for project improvement teams to reach desired results as quickly as possible. Meanwhile, team members are receiving hands-on training and structured education in the Six Sigma method to ensure ongoing leadership development in real time.

4. Review and learn from the process

When an improvement is reached, executive leadership and Six Sigma team members should review how the process went, identifying best practices and areas for additional improvement. These will inform the team as it moves into the next target area.

Implement the Six Sigma methodology for performance improvement and leadership development

Regardless of your organization’s size or industry, the Six Sigma method can Improve your internal processes and drive better outcomes. This strategy relies on the people who implement it, creating excellent opportunities for leadership development among your staff. So, while it might not be a supersecret martial arts fraternity, Six Sigma still packs quite the punch.

Thu, 04 Aug 2022 12:00:00 -0500 en text/html https://www.fool.com/the-ascent/small-business/articles/six-sigma/
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