I am of a mature aged learner and want to learn probability and statistics at a senior high school (k12) and undergraduate level for my own general understanding. I have discovered in the past that I learn best by having large well graduated problem sets where the variations between problems are small and obvious, rather than having relatively few problems with significant differences between them. Based on previous testing I can conclude that I am of moderately above average general intelligence but I am a slow learner. I can be patient. Most texts do not have enough problems and the steps from problem to problem are to great for me to learn efficiently. Can anyone suggest a good text book. Thank you.
My AP Statistics class uses The Practice of Statistics (Josh Tabor). It has a large variety of exercises at the end of each chapter and they are definitely in the order of difficulty. They are also presented in the same order as the ideas are presented in the chapter itself. There are definitely both "practice" type questions and "deep thinking" type questions, and in my opinion the problems are "graduated." There are generally two very similar problems back-to-back, one even one odd, with only the odd ones having the answer in the back of the book.
I use Neil Weiss, Introductory Statistics in my classes. It's my favorite textbook that I use.