Statistics is a branch of mathematics, which deals with the collection, analysis, presentation and organization of data. It can involve the design of surveys and experiments for the collection of data. Statistical methods, such as descriptive statistics and inferential statistics are of importance in data analysis. Descriptive statistics summarizes sample data using indexes like mean or standard deviation. Inferential statistics draws conclusions from data that are prone to random variations. Some statistical tests and procedures include the analysis of variance, chi-squared test, correlation, factor analysis, regression analysis, etc. Statistics is applied in the fields of machine learning, data mining, statistical computing, etc. This textbook is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of statistics. It studies, analyzes and uphold the pillars of this discipline and its utmost significance in modern times. For someone with an interest and eye for detail, this book covers the most significant topics in the field of statistics.