I used this textbook for an econometrics class. Many of the concepts were explained with too much math/symbols, and not enough intuitive understanding. It would have helped to use move visuals to improve comprehension. Also, there are some typos in some of the formulas and math, so verify the author's work while you read!
Leaves much to be desired... I was lost in the lectures, so this book got me through some of the concepts, but it could have been better. (In comparison, for a previous stat course I used the book 'Statistics' by Freedman, which used excellent visuals and graphs to really drive the points home.)