Instruct: Classify a given Amazon review as either positive or negative.
Query: A muddled mess

It's hard to believe that a Wharton professor produced this book but I guess it's just proof that no school is perfect. I'm sure the authors understand statistical analysis but they have no clue how to organize the material or communicate what they know effectively. Honestly, even if you have learned the concepts for a chapter through another source this book can be hard to follow.Want an example of the murky text? Try this typical run-on sentence quoted directly from the book. "In the same way, the normal random variable is an abstraction, because in theory any numerical value, negative as well as positive, is possible, and the probability histogram is a smooth, symmetric, bell-shaped curve." Try stringing together 800 pages of similar prose and you have an idea what awaits you here.I watched an entire class including the professor disown this book because it was useless. Do yourself a favor and avoid this turkey if at all possible.