The book "The method of least squares in socio-economic research" by Yuri Gavrilovich Korolev is a deep and comprehensive study of one of the most popular and widely used methods of statistical analysis. In this paper, the author not only explains the theoretical foundations of the least squares method, but also demonstrates its practical application in various aspects of socio-economic research. Yuri Gavrilovich Korolev is a well-known Russian scientist and practitioner in the field of economics and statistics, whose works are distinguished by clarity of presentation and deep understanding of the subject. In his book, he appeals to readers interested in economics, statistics and sociology, as well as those who want to learn how to use mathematical methods to analyze data. The book will be useful to both students and postgraduates of economic and social faculties, as well as practitioners working in the field of data analysis, marketing, sociology and other related disciplines . From the first pages, the author immerses the reader in the world of statistics, explaining how the least squares method allows you to find optimal solutions when analyzing large amounts of data. The Queen shares not only theoretical aspects, but also practical examples, which makes the material accessible and understandable. It shows how this method can be used to build regression models, which in turn helps researchers make informed conclusions and predictions based on the collected data. The topics raised in the book cover a wide range of issues, from the basics of statistical analysis to more complex concepts such as multicollinearity and autocorrelation. Korolev focuses on the importance of choosing the right model and interpreting the results, which is a key point in socio-economic research. He also discusses the practical aspects of working with data, including collection, processing, and visualization, which makes the book particularly relevant in the era of big data. The method of least squares in socio-economic research is distinguished by its style . Yuri Gavrilovich Korolev uses an accessible and understandable language, avoiding unnecessarily complex terminology, which allows readers without deep knowledge in mathematics to easily absorb material. His approach to learning is based on examples from real practice, which makes reading not only useful, but also fascinating. If you are looking for literature that will help you understand the methods of data analysis and their application in socio-economic research, this book will be an excellent choice. It will be interesting not only for students and graduate students, but also for practitioners who want to improve their skills in statistics and data analysis. In conclusion, “The method of least squares in socio-economic research” is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of statistics and scientific analysis. The book The Queen is a guide to the world of data that will help you not only understand, but also apply the knowledge gained in practice. If you are interested in topics such as regression analysis, statistical data processing and their application in economics, then this work should definitely take its rightful place on your bookshelf.