The book "Data Analysis with RStudio" offers a comprehensive introduction to using RStudio for data analysis. It is aimed at both practitioners and students, with the goal of conveying the joy of data analysis with R. The content is designed to help readers learn how to install RStudio, import data, write scripts, and save their work. Additionally, fundamental statistical concepts are covered, including creating graphics and conducting hypothesis tests, analysis of variance, and regressions. To deepen understanding, the book includes exercises with solutions provided at the end of the text. This textbook has been specifically developed for use in university courses in Germany, Austria, and Switzerland.