The book "Fundamentals of probability theory and mathematical statistics" by Baldin K. In. , Bashlykova V. N. and Rukosoeva A. In. It is a fascinating and deep dive into the world of probabilistic and statistical methods that play a key role in modern scientific and practical data analysis. This publication will become an indispensable assistant for students, graduate students, as well as anyone interested in mathematics and its applications in various fields - from economics to engineering. The authors, with extensive experience in teaching and research activities, offer the reader an accessible and understandable approach to the complex concepts of probability theory and statistics. The book begins with the basics, gradually introducing the reader to more complex topics, making it an ideal choice for both beginners and those who want to refresh their knowledge. It examines key concepts such as random variables, distributions, mathematical expectation and variance, and statistical analysis methods, including sample studies and hypotheses. The book pays special attention to practical examples and tasks that help to better assimilate the material and apply theoretical knowledge in practice. Readers will be able to find many illustrations, graphs and tables that make information more clear and understandable. This is especially useful for students who are preparing for exams or coursework, as well as for professionals working with data in their professional activities. The topics raised in the book cover a wide range of issues, including probability of events, the laws of large numbers, the central limit theorem, and regression analysis methods. These concepts not only have theoretical value, but also find application in real-world tasks such as risk analysis, forecasting, and data-driven decision-making. The book will be of particular interest to those working in areas related to data analysis, economics, sociology, and other sciences where statistics play an important role. The style of the authors is distinguished by clarity and logical presentation, which makes it easy to digest even the most complex topics. They use a lot of real-life examples, which makes the material more alive and relevant. In addition, the book contains exercises with answers, which allows readers to independently test their knowledge and consolidate what they have learned. If you are looking for literature that will help you master the basics of probability theory and statistics, then “Basics of probability theory and mathematical statistics” is exactly what you need. This book will be a reliable companion in your educational path, as well as a source of inspiration for further study of more complex topics in mathematics and statistics. For those who are interested in similar works, you can recommend books by authors such as D. Castelnoy "Statistics for Beginners" and X. K. Lee "Probability and Statistics for Engineers" . These books also offer affordable