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Welcome to our Knowledge Center for Lean Sigma, SPC and Quality Management!

Use the Index to find specific topics, or select one of the following categories for a broader search of materials:

Lean Six Sigma

Statistical Process Control (SPC)

Quality Management

Quality improvement Tools

Designed Experiments (DOE)

Regression

Statistical Inference (including Distributions)

Industry Perspectives

Although we have included much content in our free knowledge center for process excellence, you can also supplement these materials with our paid course content:

Introduction to Lean Six Sigma

Lean Six Sigma DMAIC Essentials

SPC Concepts

Regression

Designed Experiments (DOE)

Measurement Systems Analysis (MSA)

If you just want to test your skills, consider adding one of our popular study guides:

Six Sigma Study Guide

Quality Management Study Guide

We also offer complete certification courses, which include our books, study guides, and the course content noted above:

SPC Specialist Certification

Lean Six Sigma Black Belt Certification

Lean Six Sigma Green Belt Certification

Lean Six Sigma Yellow Belt Certification

Lean Six Sigma Champion Certification

Please feel free to contact Paul Keller, the author of the Knowledge Center and each of the courses noted above, with your questions on Process Excellence.

Since 1982: The art & science to improve your bottom line

Quality America offers Statistical Process Control software, as well as training materials for Lean Six Sigma, Quality Management and SPC. We embrace a customer-driven approach, and lead in many software innovations, continually seeking ways to provide our customers with the best and most affordable solutions. Leaders in their field, Quality America has provided software and training products and services to tens of thousands of companies worldwide.

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