on December 1, 2008
The softback cover book is good and to the point. However, it lacks the practice exercise of the hardback cover which, if you are not that great in statistics, get the hardback cover with the practice problems and answers to help you through. If you are a wiz at math the softcover abbreviated version is your ticket...some of us need a little extra help. However, got my book really fast and it was a great quality book.