Author(s): Thomas Pyzdek, Paul KellerDifference between 4th and 3rd editions Side by side comparison of table of contents helps to figure out the most significant changes. |

**Key differences between 4th and 3rd editions**

- Period between current and previous editions: 5 years (2014 vs 2009).
- The First edition of Pyzdek's
*The Six Sigma Handbook*was published in 2000. - New material in the Fourth Ed:
**Chapter 1:**Differences between Six Sigma and Three Sigma techniques for improving performance.**Chapter 2:**- Section on techniques and guidelines for collecting customer data.
- Section on concepts and principles of the theory of constraints.
**Chapter 8:**- Section on distributions presents Log-normal and Weibull distributions.
- Material on process capability indices and process capability analysis for non-normal data with MINITAB.
**Chapter 10:**Comparison of methodologies for designing experiments.**Chapter 11:**Pugh matrix for the concept selection.

The Six Sigma Handbook

Published by: McGraw-Hill Education, May 29, 2014

Published by: McGraw-Hill Education, May 13, 2014

The Six Sigma Handbook: A Complete Guide for Greenbelts, Blackbelts, and Managers at All Levels

Published by: McGraw-Hill Professional, September 21, 2009

The Six Sigma Handbook: A Complete Guide for Greenbelts, Blackbelts, and Managers at All Levels

Published by: McGraw-Hill, March 20, 2003