Math problems of the day for 7/20/26. Note: No math problems for Sat. 7/18/26 and Sun. 7/19/26 due to vacation.

This tutorial provides a clear, step-by-step introduction to calculating and interpreting Relative Risk (RR) using R. Designed for biostatistics beginners and epidemiologists, the guide walks through three distinct methodologies: manual extraction from a 2 × 2 table, automated estimation using the epitools package, and adjusted analysis controlling for clinical confounders using log-binomial regression models (glm).