Instruct: Classify Amazon reviews into positive or negative sentiment
Query: If you have a choice, don't buy it!!

I am very disappointed with this book, especially considering how much I paid for it... In particular, the book lacks good example problems (it lacks enough examples, period), and is somewhat unorganized. The authors do not explain how to use formulas very well, and they often skip steps and leave the reader bewildered. I also wish there were more answered problems for each chapter in order to test your knowledge more adequately.In combination with a poorly taught class, I have found the book to be ultimately unhelpful in my efforts to learn and apply statistics. If you're looking for independent study, or just a good stats book, this is definitely NOT the way to go.