Anyone taking a course in Statistics should purchase this little book as a companion to whatever textbook or other materials your course requires. This book is particularly useful as a reference for those who may not use statistics often. However, even if you're a statistics guru (e.g. instructor, teaching assistant, etc.) this book is a good resource for you to use to help someone who isn't a guru yet. More importantly, this book doesn't cost an arm and a leg -- now what's the probability of that?EZ-101 Statistics (Barron's Ez-101 Study Keys)