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Six Sigma

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Management System Orientation for Six Sigma

Six Sigma is so appealing to managers because it delivers business management results. Managers need to see a return on investment, commitment, accountability, transparency, and a clear path to success [more…]

What is Quality in Six Sigma?

To begin understanding the technical side of Six Sigma, you have to first answer a seemingly straightforward question: What is quality? A traditional and widely held definition of quality is [more…]

The Six Sigma Perspective on Quality

What’s poor quality really costing your business? Compare the flawed traditional perspective and the Six Sigma perspective on specifications and their relation to quality and costs. Poor quality is detrimental [more…]

How to Connect Quality to Variation with Six Sigma

Simply changing a company’s belief system — its philosophy — from a goal post quality mentality to a Six Sigma “on target with minimal variation” mentality immediately and naturally begins to alter the [more…]

How Much Statistical Skill Is Required for Six Sigma?

Solving problems the Six Sigma way requires varying degrees of skill in applied statistics. Solving complex problems requires considerable statistical expertise, but dealing with moderate problems or routine [more…]

How to Launch a Six Sigma Project

In Six Sigma, you make progress the old-fashioned way — one project at a time. In essence, projects are the unit of change; they define the collective effort by which most Six Sigma progress is accomplished [more…]

How to Decide if a Six Sigma Project is Worthwhile

After you set the targeted level of improvement, you can then determine the financial benefit of doing the Six Sigma project and decide whether the project is worth your time. The Six Sigma effort is often [more…]

How to Write a Problem Statement for Six Sigma

The problem statement serves several purposes in a Six Sigma project. First, it significantly clarifies the current situation by specifically identifying the problem and its severity, location, and financial [more…]

How to Determine the Level of Improvement for a Six Sigma Project

Perhaps you’ve now convinced yourself that you have a viable Six Sigma project and that you can convince others to help make improvements. You know specifically what must be improved to make life better [more…]

How to Write an Objective Statement for Six Sigma

After you know what your problem statement is and how much improvement you’re aiming for with Six Sigma, you’re ready to craft your objective statement. Your [more…]

How to Get a Six Sigma Project Approved and Assigned

Your final step in getting your Six Sigma project started is to identify who has to approve the project. Although this task seems like an easy step that requires little effort, don’t take it lightly — [more…]

How to Use DMAIC for Six Sigma

At the business level, Six Sigma projects are the players in the overall game plan of a breakthrough performance improvement initiative, DMAIC. The business perspective is that a Six Sigma project is the [more…]

How to Organize a Team for a Six Sigma Initiative

The full deployment and implementation of a Six Sigma initiative in an organization requires the collective participation of numerous people, each of whom is responsible for fulfilling specific roles and [more…]

How to Write the Business Case for Six Sigma

After you’ve homed in on the problem area, you need to define the business case for the Six Sigma project approach you’re considering. Writing the business case helps you describe or characterize the issues [more…]

How to Use Different Types of Data for Six Sigma

All data aren’t created equal. As you begin your Six Sigma quest to organize your data, you first need to know what type of performance data you have. Just as knowing what the fish are biting tells you [more…]

How to Achieve Customer Driven Value for Six Sigma

Most companies want to achieve customer driven value with their Six Sigma initiative. They want customers to express both a strong demand for and a great satisfaction with their work. [more…]

How to Analyze Process Flow to Achieve Value for Six Sigma

A process in Six Sigma where material and information flow continuously is one that has minimal waste, so one way to identify waste and improve value is to look for disruptions to flow. Here are some indicators [more…]

How to Analyze Normal Variation and Probability for Six Sigma

All process and product data in Six Sigma projects have variation; each repeated instance of any measured data point is different from the instance before. And as the collection of repeated measurements [more…]

How to Work with the Z Transformation for Six Sigma

There will most definitely be times when you will need to work with the Z transformation in Six Sigma. How often do you come across a process or product characteristic that has an average of 0 and a standard [more…]

How to Measure Yield for Six Sigma

You will need to be able to measure yield for your Six Sigma initiative. In the simplest terms, a process or characteristic can either meet or not meet its specification. Just as when you harvest the fruit [more…]

How to Measure Defect Rate for Six Sigma

The complementary measurement of yield for Six Sigma is defects. When a process or characteristic doesn’t perform within its specifications, it produces a noncompliant condition, called a [more…]

How to Link Yield and Defect Rate for Six Sigma

Yield and defect rate aren’t completely independent of each other for Six Sigma. When you have an overall process with a relatively low defect rate — say, a process that produces units with a [more…]

Short and Long Term Capability Indices for Six Sigma

The simplest capability index for Six Sigma is called CPor short term capability index. It compares the width of a two-sided specification to the effective short-term width of the process. [more…]

How to Analyze Your Six Sigma Measurement System

It’s important for your Six Sigma initiative to know if your measurement system is effective. You need solid data to initiate your project and having a solid measurement system is key. [more…]

How to Mine Your Six Sigma Data for Insight

Data mining is just what its name implies — it’s the labor of digging and sorting through Six Sigma data for clues to where the improvement gems may lie. Sometimes you have to go through a lot of dirt [more…]


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