C. R. Rao, or Calyampudi Radhakrishna Rao, is an Indian-American statistician known for his significant contributions to the field of statistics. Born on September 10, 1920, in Hindu College, Andhra Pradesh, he has developed several important statistical theories and methods, including the Cramér-Rao bound, which provides a lower bound on the variance of estimators.
Rao has authored numerous research papers and books, influencing both theoretical and applied statistics. He has received several prestigious awards, including the Padma Bhushan and the National Medal of Science, recognizing his impact on the discipline and his role in advancing statistical science globally.