The book "Probability Theory and Mathematical Statistics" by A. In. Metelsky is a fascinating and deep dive into the world of mathematical concepts that underlie data analysis and decision-making under uncertainty. This work will be a real discovery for students, graduate students and anyone interested in mathematics, statistics and their practical application in various fields. In his book, Metelsky not only explains the basic principles of probability theory and statistics, but also does so in an accessible and understandable form, which allows the reader to easily assimilate complex ideas. He uses a lot of real-life examples, which makes the material more visual and interesting. Readers will be able to see how theoretical concepts are applied in areas such as economics, sociology, medicine, and even in everyday life. This makes the book especially valuable for those who want not only to learn the theory, but also to understand how it works in practice. The book will be especially useful for students of mathematical and statistical specialties, as well as for those who work in the field of data analytics, finance and scientific research. If you are interested in how to use statistical methods to analyze data, or want to improve your decision-making skills based on probability models, then Probability Theory and Mathematical Statistics will be an indispensable tool for you. The topics that Metelsky raises cover a wide range of issues, ranging from the foundations of probability theory to more complex concepts, such as parameter estimation and hypothesis verification. The author pays attention to the importance of statistical thinking in the modern world, where data is becoming a key resource. In an environment where information is all around us, the ability to interpret data correctly and draw sound conclusions from it becomes an important skill. Style A. In. Metelsky is distinguished by clarity and logic, which allows the reader to easily follow the author's thoughts. He masterfully combines theory with practical tasks, which makes learning not only useful, but also fascinating. The book is full of illustrations, graphs and examples that help to better understand the material. This makes it an ideal teaching tool for both self-study and use in educational institutions. In addition to Probability Theory and Mathematical Statistics, A. In. Metelsky is the author of other significant works in the field of mathematics and statistics, which confirms his high level of expertise and deep knowledge in this field. His books are often recommended for both students and professionals seeking to expand their knowledge and skills. If you are looking for literature that will help you understand complex mathematical concepts and teach you how to put them into practice, “Probability Theory and Mathematical Statistics” is what you need. This book will be your reliable companion in the world of numbers and data, open new horizons and help develop critical thinking. Do not miss the opportunity to get acquainted with the work of one of the leading authors in the field of mathematics - you will not regret your choice!