Dr Cr Rao Just Passed Away, Who was Dr C.R Rao? How Did Dr C.R Rao Die? Cause of Death Revealed

Dr. C.R. Rao, a renowned mathematician and statistician, passed away at 102. The cause of his death was attributed to an illness.   

by Damodharan N | Updated Aug 23, 2023

Dr Cr Rao Just Passed Away, Who was Dr C.R Rao? How Did Dr C.R Rao Die? Cause of Death Revealed

Who was Dr C.R Rao? 

Dr. C.R. Rao, full name Calyampudi Radhakrishna Rao, was a renowned Indian statistician and mathematician who made significant contributions to the fields of statistics, mathematics, and their applications. He was born on September 10, 1920, in Hadagali, a town in the present-day Karnataka state of India. Dr. Rao's life and work spanned several continents, and he is widely recognized as one of the most influential statisticians of the 20th century.

Early Education and Career:

  • C.R. Rao completed his Bachelor of Arts (BA) degree from A.V.N. College, Visakhapatnam.
  • He went on to earn a Master of Arts (MA) degree in mathematics from Andhra University in India in 1940.
  • Subsequently, he pursued an MA in statistics from Calcutta University in 1943, achieving the first rank and a gold medal.
  • His early career saw the publication of 19 articles before he embarked on his pivotal collaboration with the eminent statistician R.A. Fisher at Cambridge University in the United Kingdom.

Education and Research Abroad:

  • Under the guidance of R.A. Fisher, Rao earned his Ph.D. from Cambridge University in 1948, where his research focused on statistical methodology.
  • During his time at Cambridge, Rao worked on projects related to anthropology and archaeology, utilizing statistical methodologies developed by P.C. Mahalanobis, the founder of the Indian Statistical Institute (ISI).

Contributions to Statistical Theory:

  • One of his earliest breakthroughs was the publication of his 11th article in 1945, which led to the development of significant results such as the Cramér–Rao bound, Rao distance, and Rao-Blackwellization.
  • He made foundational contributions to various areas of statistics, including multivariate analysis of variance, tests of significance in multivariate analysis, and orthogonal arrays.

Academic and Professional Positions:

  • C.R. Rao's association with the Indian Statistical Institute (ISI) spanned nearly four decades, during which he held various positions, including professor and director. He was instrumental in developing research and training programs at ISI.
  • He served as the President of several prestigious organizations, including The Indian Econometric Society (TIES), the International Biometric Society (IBS), the Institute of Mathematical Statistics (IMS), and the International Statistical Institute (ISI).

Global Recognition and Honors:

  • Dr. Rao's contributions earned him international acclaim. He was elected as a Fellow of the National Academy of Sciences (USA) and received the National Medal of Science, the highest scientific award in the United States.
  • He was honored with the Padma Vibhushan, the second-highest civilian award in India, for his outstanding contributions to science and mathematics.
  • The Institute of Combinatorial Mathematics and its Applications recognized him as an Honorary Member for his expertise in statistical design theory.
  • Throughout his career, he received numerous awards, honorary doctorates, and accolades from various countries and institutions.


  • C.R. Rao authored 14 books and around 350 research papers, covering a wide range of topics in statistics and mathematics.
  • His work laid the foundation for many statistical concepts and techniques that continue to be used in various fields, including engineering, social sciences, and economics.
  • He played a crucial role in shaping statistical education and research in India and globally, training numerous students who went on to make significant contributions in their own right.

Family and Personal Life:

  • Dr. Rao was the eighth child in his family and was named Radhakrishna following a tradition. He married Bhargavi, who was an accomplished psychologist and educator. They had a daughter named Tejaswini and a son named Veerendra.

C.R. Rao's enduring contributions to statistical science, his leadership in academia, and his impact on global research and education make him a trailblazer in the field of statistics. His legacy continues to inspire future generations of statisticians and mathematicians worldwide.

Dr Cr Rao Just Passed Away 

It is with a heavy heart that we announce the passing of the legendary mathematics and statistics professor, Calyampudi Radhakrishna Rao, affectionately known as CR Rao. On the morning of August 23, 2023, the world lost a brilliant mind and a true luminary in the fields of mathematics and statistics. At the age of 102, CR Rao peacefully departed while residing in the United States.

CR Rao's life journey was nothing short of extraordinary. Born on September 10, 1920, he embarked on a lifelong pursuit of knowledge and intellectual exploration. His contributions to mathematics and statistics have left an indelible mark on the scientific community, influencing generations of researchers and scholars.

Rao's impact on the world of mathematics and statistics cannot be overstated. He was a trailblazer who shaped the landscape of these disciplines through his pioneering research, innovative theories, and profound insights.

His work spanned a wide range of topics, from fundamental statistical concepts to advanced mathematical theories. One of Rao's most notable contributions is the Cramér-Rao inequality, a fundamental result in mathematical statistics that provides a lower bound on the variance of unbiased estimators. This concept revolutionized the way statisticians approach the analysis of data, and it continues to be a cornerstone of statistical theory.

Rao's brilliance wasn't confined to theory alone; he also made significant practical contributions. His work on multivariate analysis of variance, tests of significance, and orthogonal arrays has had a profound impact on fields ranging from biology to economics. His ability to bridge theory and application made him a true luminary in both academia and real-world problem-solving.

How Did Dr C.R Rao Die? 

Dr. C.R. Rao, a distinguished figure in the fields of mathematics and statistics, breathed his last at the age of 102 on August 23, 2023, while residing in the United States. Although the specific details of the illness leading to his demise are not specified in the available information, it is confirmed that he succumbed to an illness. Dr. Rao's legacy is deeply intertwined with his unparalleled contributions to the realms of mathematics and statistics, making him a towering presence in the world of academia and research.

Throughout his illustrious career, Dr. Rao's accomplishments reverberated globally, leaving an enduring impact on these disciplines. His pioneering work encompassed fundamental concepts like the Cramér–Rao bound, Rao distance, and Rao Blackwellization, which have become cornerstones of statistical theory.

The depth of his influence extended to multivariate analysis, variance testing, and a plethora of other statistical methodologies. Dr. Rao's insights not only enriched the theoretical framework but also found practical applications across various fields, including social sciences, economics, and biology.

His contributions went beyond scholarly achievements. Serving in numerous leadership roles and institutions, such as the Indian Statistical Institute and various prestigious societies, Dr. Rao's commitment to fostering statistical education and research was unwavering. His presidency at the International Statistical Institute and other esteemed organizations underscored his dedication to promoting statistical knowledge and collaboration on a global scale.

Dr. C.R. Rao's passing marks a significant loss for academia, resonating with mathematicians, statisticians, researchers, and students alike. His profound impact on statistical theory, education, and the pursuit of knowledge remains a legacy that will continue to inspire generations to come.

Dr C.R Rao Cause of Cause death 

The precise cause of Dr. C.R. Rao's passing at the age of 102 on August 23, 2023, in the United States has not been explicitly disclosed in the available information. While it is confirmed that he succumbed to an illness, the specific details regarding the nature of the illness are not provided.

Dr. Rao's unparalleled contributions to the realms of mathematics and statistics have left an indelible mark on the scientific community, and his passing is a significant loss for academia and beyond.  Despite the absence of specific details about the cause of his passing, his legacy continues to resonate through his groundbreaking work and enduring influence in the field of statistics and mathematics.

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Dr CR Rao Just Passed Away - FAQs

1. Who was Dr. C.R. Rao?   

Dr. C.R. Rao, or Calyampudi Radhakrishna Rao, was a distinguished mathematician and statistician renowned for his groundbreaking contributions to the field of statistics.

2. How did Dr. C.R. Rao die?   

Dr. C.R. Rao passed away at the age of 102 due to an illness.

3. What were Dr. C.R. Rao's major achievements?

Dr. C.R. Rao made significant contributions to statistical theory and methodology, receiving numerous awards including the Padma Vibhushan and the National Medal of Science.

4. What impact did Dr. C.R. Rao have on academia?

Dr. C.R. Rao's work profoundly influenced mathematics and statistics, shaping these fields for decades and earning him international recognition.

5. What is Dr. C.R. Rao's legacy?  

Dr. C.R. Rao's legacy includes his groundbreaking research, extensive publications, and lasting impact on the development of statistical science.

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