“Data Science and Big Data Analytics: Principles, Techniques, and Applications” is designed to provide a comprehensive introduction to the rapidly growing fields of data science and big data analytics. The book offers a balanced approach to both theoretical concepts and practical knowledge, making it ideal for learners at various levels—ranging from beginners to those seeking advanced understanding. By exploring topics such as data collection, preprocessing, machine learning, and big data technologies, the book lays the groundwork for understanding how large-scale data is managed and utilized in real-world applications. Without including case studies or examples, the text emphasizes key concepts, tools, and methodologies. The book also addresses ethical considerations and future trends in data science, making it a well-rounded resource for students, educators, and professionals aiming to grasp the essentials of the field.