What are R Markdown files?

R Markdown files are documents that combine text, code, and output in a single file, typically with the .Rmd extension. They allow users to write and execute R code within narrative text, making it easy to create dynamic reports, presentations, and documents that include both analysis and explanation. R Markdown is widely used for reproducible research and data reporting, as it integrates code, results, and interpretation seamlessly. These files can be converted to various formats, such as HTML, PDF, or Word.