In the data analysis for my own research work, I was often slowed down by two things: (1) I did not know enough statistics, and (2) the books available would provide a theoretical background, but no real practical help. The book you are holding in your hands (or on your tablet or laptop) is intended to be the book that will solve this very problem. It is designed to provide enough basic understanding so that you know what you are doing, and it should equip you with the tools you need. I believe that the Python solutions provided in this book for the most basic statistical problems address at least 90% of the problems that most physicists, biologists, and medical doctors encounter in their work. So if you are the typical graduate student working on a degree, or a medical researcher analyzing the latest experiments, chances are that you will find the tools you require here explanation and source-code included.