5 stars (Lean Six Sigma Pocket Toolbook) - This is a really good consolidation of the various methods available for approaching six sigma projects. It is an interesting book to browse and very useful if one is unsure about exactly which methodology or statistical test should be used in a given situation. Six sigma is mostly about applying a scientific methodology to improving processes and this book "cuts to the chase". 5 stars (Outstanding Quick Reference Guide) - This pocket toolbook hits the "sweet spot" as a quick reference guide for lean six sigma practitioners. Don't expect this to be an in-depth treatment of the 70+ tools covered in this book. If you're new to the lean/six sigma disciplines, you need to start someplace else. However, if you are currently working in these disciplines and you need a reference with enough meat to remind you of how/why/when a particular tool should be used and also a little of the statistical foundations supporting the tool, then you will find this to be a very valuable book to own. I own just about all of the "pocket guides" and I often find them to be a little too cryptic and abbreviated to meet my needs. This book is a very nice middle ground between the often complex and verbose "learning textbooks" and the often times overly brief pocket guides. As with any first edition, there are some errors that slipped through the editing process, but I can still highly recommend this book as one to keep handy when your out there fighting those "quality and productivity" battles. ... McGraw-Hill :: Business & Economics & Management :: Total Quality Management :: Quality (Management) :: Management - General :: Entrepreneurship :: Business&Economics :: Busines :: The Lean Six Sigma Pocket Toolbook- A Quick Reference Guide to 70 Tools for Improving Quality and Sp