istics .

CR Rao was born to a Telugu family in Karnataka,India.He did his MSC in mathematics from Andhra University and an MA in statistics from Calcutta University in 1943 . After which he obtained a PhD degree at King's College in Cambridge University under R.A fisher in 1948, to which he added a DSc degree,also from Cambridge University in 1965.

In 2002,his incredible contribution were recognised on an international scale when he was awarded the 'National Medal of Science ' by the then US president George W Bush.

The fundamental concepts in statistics the 'Cramer-Rao lower bound ' and the 'Rao-Blackwell Theorem' are named after him.

Cramer-Rao lower bound is about the best accuracy or the minimum level of uncertainty that a statistical estimator can achieve. Essentially no matter how clever your method or algorithm is, you can't do better than this lower limit.

Rao-Blackwell Theorem provides a way to improve an estimator. If you have an initial guess at a parameter, the theorem can help you refine that guess to make it more accurate, by averaging the old estimator over some other variables.

25:[] 26:["calyampudi","radhakrishna","rao ","Sriya Swarupa","calyampudi radhakrishna rao ","history"] 27:T553,

Calyampudi Radhakrishna Rao Or CR Rao,a legendary mathematician and statistician who contributed immensely to the world of statistics .

In 2002,his incredible contribution were recognised on an international scale when he was awarded the 'National Medal of Science ' by the then US president George W Bush.

Calyampudi Radhakrishna Rao

India's unknown math genius