The Art and Science of Data Analysis is a comprehensive textbook that addresses the fundamental principles and techniques of data analysis. It provides a detailed discussion of important topics such as ensuring data quality, conducting exploratory data analyses, and understanding statistical foundations. Additionally, advanced analytical methods such as machine learning, cluster analysis, classification, and time series forecasting are covered. The book places a strong emphasis on practical applications and includes numerous exercises to apply the knowledge gained. A central concern is the consideration of ethical aspects as well as the promotion of continuous learning. The goal is to equip readers with the necessary knowledge and skills to make data-driven decisions and drive innovation in various fields.