Exact statistical methods for data analysis Book

I have to take this class again. So, I have to use this book again. I am not a happy camper. I don't understand how I could get a D in my previous class if I did so well on all of the homework and quizzes. I must have really blown the final. I don't understand because I had time to check all of my answers. Does blowing the first midterm really bring a person's grade down that much? I don't think that is fair. I have to re-read this book and I am not looking forward to it, but I can guarantee that this time I'm aiming for an "A" in the class to knock that "D" out of the water. I was aiming for a "B" or even a "C" the first time. Not anymore. If I have to re-take this stupid class I'm going to get an "A" to show how stupid my other teacher was at grading the class. I feel sorry for you if you are in the same boat as me, but just remember, this too shall pass. Bring it on Statistics! I'm ready this time!