The book provides practical techniques for analyzing data. It describes how to investigate and test the relationships between variables in Excel and use it for statistics and analysis. Described is the transfer of data from Excel to R, an open source programming language specifically designed to perform statistical analysis. A separate section is devoted to transferring data from Excel to Python and performing full data analysis using this language. As a result, the reader will learn how to perform Exploratory Data Analysis (EDA) and hypothesis testing using the Python and R programming languages. For data analysts.