Probability Theory and Mathematical Statistics (4th edition) mainly includes probability theory, mathematical statistics and stochastic process, and each chapter is accompanied by exercises. At the same time, it covers all the knowledge points of the mathematics examination outline of the national unified entrance examination for master students. Probability and Mathematical Statistics (4th Edition) can be used as a teaching material and reference book for postgraduate entrance examination for engineering and science (non-mathematics majors) in colleges and universities, and also as a reference for engineers and technicians.