The 11th edition of Mahajan’s Methods in Biostatistics continues to serve as a trusted companion for medical students, researchers, and teachers across disciplines. Written in clear and simple language, it demystifies complex statistical concepts while maintaining a compact and accessible format. This edition introduces new chapters on the evolution of statistics and key nonparametric tests including Mann-Whitney U, Wilcoxon, Kruskal-Wallis, and Kaplan-Meier survival analysis. All chapters have been thoroughly revised with the addition of a question bank to enhance learning and exam preparation.