This textbook provides a firm grounding in the laws and principles of statistical and thermodynamics that are essential to the study of physics. It presents the subject in a remarkably fresh, clear, and understandable manner, and is based on the most up-to-be research in the field. This sets the text apart from other books serving the same course, as does its clear and logical approach, which treats statistical mechanics as an application of probability theory. Problems are included at the end of each chapter, and supplementary sections include review questions, exercises, and solutions. The scope and variety of these problems also contribute to the book's value. Intended for use in upper undergraduate physics courses, the text is also suitable for electrical engineering and chemistry students. The material is presented at a high level, yet the mathematical foundations are compatible with students' understanding. An accompanying diskette provides helpful experience with a computer approach to the material.