When I first took Statistics at the college level I received an Incomplete. When I cleared my incomplete, I received a D. I later transferred to a less rigorous major at a less rigorous school. The books required for my Statistics classes then were titled things like "Business Statistics". Having an easier time figuring out the bare basics of Statistics in these classes, I wish I had Ross to dig deeper into topics I now understood. Even though my first experience with Statistics was not successful I remembered Ross to be one of the best books from my old school. I think that for the person who is 1) familiar with the concepts of Prob & Stats, or who is 2) flying through Business Statistics or Statistics for Social Scientists, and who wants A) to know more about the MATH behind intro Stats and Probability, or B) wants to explore a more rigorous approach to the subject, (but one that you can actually follow -- this is given one's ease with the concepts) Ross is great.. Someone who is not really familiar with the basic concepts of Statistics and has had trouble with other math classes in college may have trouble with Ross as well.. But he does a good job at trying to make it simple, given that it's math. It then, goes without saying, that it is a great introduction for Engineers and Scientists into Statistics. For those who are good at college-level math (typically successful Eng & Sci undergrads are), this book will probably be easier to follow than a lot if not most of the books in your other courses.