Dewey Dorsett's articles on GoLeanSixSigma.com

Dewey Dorsett

Dewey is an Executive Consultant at OT Consulting Group and has consulted and delivered outstanding results to clients in manufacturing and service industries for 16 years using Lean, and Six Sigma Supply Chain deployments in both domestic and international environments. Prior to consulting, he worked in manufacturing industries in quality, productivity and sales capacities.

How it is possible to calculate CP or CPK if I have non-normal data?

Dewey Dorsett

The non-normal calculation is based on the maximum likihood estimate of the distribution parameters rather than the mean and variance associated with the normal distribution. These parameters estimate the distribution proportions for the capability calculation. For example, a Gamma distribution is defined by shape, scale and theshold parameters. A Poisson distribution is defined by Lambda,…

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How is value determined in a Lean system?

Dewey Dorsett

Here’s a simple and brief answer to a meaty subject. Value in a Lean system is created through the elimination of waste and the transference of time and resources from non-value adding process activities to value-adding activities. Waste is definitional and comprises anything NOT needed in the creation and delivery of product or service to…

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3 Important Factors to Consider to Launch a Successful Lean Six Sigma Project

Dewey Dorsett

A key objective of every project is to deliver results in an agreed upon time period with an agreed upon set of resources. Three important factors that are critical to accomplishing this are: The Project Is Well Defined The Project Is Scoped Properly The Project Is Resourced Adequately Beginning Your…

How To Visualize An Improved Version Of Your Process

Dewey Dorsett

The “To Be” or Future State of the process is a critical component of the Lean methodology and the Value Stream mapping exercise. It is a powerful exercise that strokes the imagination and helps break free from the current inhibitors of the current state which are contributing to any one…

What should a storyboard include?

Dewey Dorsett

A storyboard should include: The goals and objectives of the project The results of the project The key activities within the DMAIC phases comprising the project

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How to Visualize a Process With a Value Stream Map

Dewey Dorsett

The Value Stream Map is a critical tool within the Lean methodology. It serves as the basis for documenting the "As Is" state of the process and is the platform for designing the "To Be" state of the new and improved process flow. A Value Stream Map (VSM) is a…

Reducing Costs Using Data Visualization in the Hospitality Industry

Dewey Dorsett

Businesses collect lots of data but don’t always translate that data into useful information about critical business processes. Data that companies collect can readily be incorporated into charts and graphs that provide this information. Here are a couple of examples. Using a Histogram A hospitality company experienced an unwelcome earnings…

How to Apply 5S: Work Station

Dewey Dorsett

5S is a fundamental pillar of a Lean deployment. The 5S exercise captures core principles of the Lean philosophy that facilitate the extension and development of a lasting lean implementation. Think of it as the foundation upon which a house is built upon. While some think of it as a…

Using a SIPOC to Leverage Control and Influence

Dewey Dorsett

We spend countless time in meetings discussing roles, responsibilities and accountabilities. Yet, I find managers and associates still have misunderstandings about what they’ve been asked to do and what it is they are responsible for. A tool I use when implementing Lean Six Sigma that leaders, managers and associates have…