Suitable for both beginners and advanced users, this popular book makes writing statistical reports easier by integrating computing directly with reporting. Reports range from homework, projects, exams, books, blogs, and web pages to virtually any documents related to statistical graphics, computing, and data analysis. This edition includes a new chapter on R Markdown v2, changes that reflect improvements in the knitr package, and several new sections. Demos and other information about the package are available on the authors website.