Management Strategies

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How to Draw Correlations from Scatter Plots in Six Sigma Analysis

A scatter plot tells you graphically how two characteristics are related, or correlated in a Six Sigma initiative. You can then use this correlation information to explore which factors and outputs affect [more…]

How to Use the Central Limit Theorem for Six Sigma

What happens when you take repeated samples from the same population? This idea is important when you use the central limit theorem for Six Sigma. Imagine flipping a coin ten times and counting the number [more…]

How to Use the Confidence Intervals for Six Sigma

Because samples are accessible, samples and confidence intervals are the primary data tool for understanding a business or processing Six Sigma performance situations. But samples can never give you an [more…]

How to Use the Confidence Intervals for Proportions in Six Sigma

Sometimes in a Six Sigma project, you will be faced with confidence intervals and proportions. When you calculate the number of successes out of a certain number of attempts — like “four out of five dentists [more…]

What You Should Know about 2k Experimentation for Six Sigma

2k full factorial experiments give you a powerful jump-start into the world of improvement through DOE for Six Sigma projects. But really, they’re just the tip of the iceberg. As you gain experience, you [more…]

How to Set Standards for Six Sigma

Taking measures for Six Sigma projects to enable and encourage a process to follow a standard — a standard sequence, a standard method of handling, a standard set of equipment settings, and so on — must [more…]

How to Detect Patterns in Control Charts for Six Sigma

Besides control chart points that lie beyond the control limits in Six Sigma, other visual patterns can tell you that something out of the ordinary is happening to your process. These other patterns also [more…]

How to Collect Data for Control Charts for Six Sigma

You must collect data for control charts for Six Sigma projects in a way that avoids a distorted or inaccurate view of the process performance — whether overly optimistic or too bleak. Using rational subgroups [more…]

How to Make Control Charts for Attribute Data for Six Sigma

In Six Sigma initiatives, you can make control charts for attribute data. Attribute data is data that can’t fit into a continuous scale but instead is chunked into distinct [more…]

The Managerial Perspective of Six Sigma

Six Sigma action occurs on two levels: the managerial and the technical. At the managerial level, a Six Sigma initiative includes many units, people, technologies, projects, schedules, and details to be [more…]

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…]


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