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Fellows Directory

Calyampudi Rao

Calyampudi Rao

Professor Calyampudi Rao FRS


Elected: 1967


Calyampudi Rao is renowned for his many significant advances in statistics, which have important applications in fields as diverse as economics, genetics, geology and biometry. He is particularly well known for the Cramér–Rao bound and the Rao–Blackwell theorem relating to estimators — functions of observed data that estimate the actual value of a quantity of interest.

Using Calyampudi’s results, researchers and analysts can not only calculate an estimate, but also how statistically ‘good’ it is. Calyampudi’s other contributions range from results in multivariate analysis — where data is used to generate results relating to more than one outcome variable at a time — to orthogonal arrays used in design experiments and in industrial quality control.

The great impact of Calyampudi’s work, which also includes a number of textbooks, is reflected in his many accolades. These include the Padma Vibhushan and the India Science Award — the highest scientific award presented by government of India — in 2010, the Royal Statistical Society’s Guy Medal in Gold, and the US President’s National Medal of Science.

Interest and expertise

Subject groups

  • Mathematics
    • Statistics and Operational Research
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