Calyampudi Radhakrishna Rao

Indian-American mathematician (1920–2023)
Person human Q711237
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Summary

Calyampudi Radhakrishna Rao was born in Hoovina Hadagali[1]. He died in Amherst[2]. He worked as a mathematician[3], statistician[4], university teacher[5], and economist[6]. He ranks in the top 0.71% of human entities by monthly Wikipedia readership (1,258 views/month, #7,070 of 1,000,298).[7]

Key Facts

  • Country of citizenship: British Raj[8], Dominion of India[9], India[10], United States[11]
  • Field of work: mathematical statistics[12], mathematics[13], statistics[14], econometrics[15]
  • Position held: director[16], chairperson[17]
  • Employer: University at Buffalo[18], Pennsylvania State University[19], Indian Statistical Institute[20], Museum of Archaeology and Anthropology[21], University of Pittsburgh[22]
  • Educated at: University of Calcutta[23], Andhra University[24], Indian Statistical Institute[25], King's College[26], University of Cambridge[27], Mrs. A.V.N. College[28]
  • Doctoral advisor: Ronald Fisher[29]
  • Award received: Fellow of the Royal Society[30], Wilks Memorial Award[31], Shanti Swarup Bhatnagar Prize for Science and Technology[32], National Medal of Science[33], India Science Award[34], Padma Vibhushan in science & engineering[35], Padma Bhushan in science & engineering[36], Srinivasa Ramanujan Medal[37], Fellow of the Econometric Society[38], Guy Medal in Gold[39], Guy Medal in Silver[40], honorary doctor of the University of Brasília[41], honorary doctor from the NOVA University Lisbon[42], honorary doctor of the University of Calcutta[43]
  • Sex or gender: male[44]
  • Doctoral student: Kalyanapuram Rangachari Parthasarathy[45], U. S. R. Murty[46], T. E. S. Raghavan[47], Sreenivasa Rao Jammalamadaka[48], Ravindra Khattree[49], Yuehua Wu[50], Dabeeru C. Rao[51], Thiruvenkatachari Parthasarathy[52], Debabrata Basu[53], Dronamraju Krishna Rao[54], Ram Prakash Gupta[55], I. M. Chakravarti[56], Pramod K. Pathak[57], Shyamal Das Peddada[58]

Body

Works and Contributions

Things named for Calyampudi Radhakrishna Rao include Cramér–Rao bound[59], an inequation[60] and Rao–Blackwell theorem[61].

Why It Matters

Calyampudi Radhakrishna Rao has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[62] He is known by 34 alternative names across languages and contexts.[63]

He is credited with the discovery of Cramér–Rao bound[64], an inequation[65] and Score test[66], a statistical test[67]. Entities named for him include Cramér–Rao bound[59], an inequation[60] and Rao–Blackwell theorem[61].

His notable doctoral advisees include Sathamangalam Ranga Iyengar Srinivasa Varadhan[68], a mathematician[69], b. 1940[70], of India[71], awarded the Guggenheim Fellowship[72], specialised in probability theory[73]; Kalyanapuram Rangachari Parthasarathy[74], a mathematician[75], 1936–2023[76], of India[77], awarded the Shanti Swarup Bhatnagar Prize for Science and Technology[78], specialised in probability theory[79]; Veeravalli S. Varadarajan[80], a mathematician[81], 1937–2019[82], of United States[83], awarded the Fellow of the American Mathematical Society[84], specialised in mathematics[85]; and Debabrata Basu[86], a mathematician[87], 1924–2001[88], of India[89], awarded the Fulbright Scholarship[90].

FAQs

Where was Calyampudi Radhakrishna Rao born?

Calyampudi Radhakrishna Rao's place of birth was Hoovina Hadagali[1].

Where did Calyampudi Radhakrishna Rao die?

Calyampudi Radhakrishna Rao passed away in Amherst[2].

What did Calyampudi Radhakrishna Rao do for work?

Calyampudi Radhakrishna Rao worked as a mathematician[3], statistician[4], university teacher[5], and economist[6].

Where did Calyampudi Radhakrishna Rao go to school?

Calyampudi Radhakrishna Rao was educated at University of Calcutta[23], Andhra University[24], Indian Statistical Institute[25], and King's College[26].

What awards did Calyampudi Radhakrishna Rao receive?

Honors received include Fellow of the Royal Society[30], Wilks Memorial Award[31], Shanti Swarup Bhatnagar Prize for Science and Technology[32], and National Medal of Science[33].

What did Calyampudi Radhakrishna Rao discover?

Calyampudi Radhakrishna Rao is credited as discoverer of Cramér–Rao bound[64] and Score test[66].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] ↑ . wikidata.org.
  2. [2] ↑ . wikidata.org.
  3. [44] ↑ . wikidata.org.
  4. [8] ↑ . wikidata.org.
  5. [9] ↑ . wikidata.org.
  6. [10] ↑ . wikidata.org.
  7. [11] ↑ . wikidata.org.
  8. [16] ↑ . wikidata.org.
  9. [17] ↑ . wikidata.org.
  10. [23] ↑ . wikidata.org.
  11. [24] ↑ . wikidata.org.
  12. [25] ↑ . wikidata.org.
  13. [26] ↑ . wikidata.org.
  14. [27] ↑ . wikidata.org.
  15. [28] ↑ . wikidata.org.
  16. [12] ↑ . wikidata.org.
  17. [13] ↑ . wikidata.org.
  18. [14] ↑ . wikidata.org.
  19. [15] ↑ . wikidata.org.
  20. [3] ↑ . wikidata.org.
  21. [4] ↑ . wikidata.org.
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  23. [6] ↑ . wikidata.org.
  24. [18] ↑ . wikidata.org.
  25. [19] ↑ . wikidata.org.
  26. [20] ↑ . wikidata.org.
  27. [21] ↑ . wikidata.org.
  28. [22] ↑ . wikidata.org.
  29. [30] ↑ . wikidata.org.
  30. [31] ↑ . wikidata.org.
  31. [32] ↑ . wikidata.org.
  32. [33] ↑ . wikidata.org.
  33. [34] ↑ . wikidata.org.
  34. [35] ↑ . wikidata.org.
  35. [36] ↑ . wikidata.org.
  36. [37] ↑ . wikidata.org.
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  39. [40] ↑ . wikidata.org.
  40. [41] ↑ . wikidata.org.
  41. [42] ↑ . wikidata.org.
  42. [43] ↑ . wikidata.org.
  43. [29] ↑ . wikidata.org.
  44. [45] ↑ . wikidata.org.
  45. [46] ↑ . wikidata.org.
  46. [47] ↑ . wikidata.org.
  47. [48] ↑ . wikidata.org.
  48. [49] ↑ . wikidata.org.
  49. [50] ↑ . wikidata.org.
  50. [51] ↑ . wikidata.org.
  51. [52] ↑ . wikidata.org.
  52. [53] ↑ . wikidata.org.
  53. [54] ↑ . wikidata.org.
  54. [55] ↑ . wikidata.org.
  55. [56] ↑ . wikidata.org.
  56. [57] ↑ . wikidata.org.
  57. [58] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [64] ↑ . wikidata.org. → on this site
  2. [66] ↑ . wikidata.org. → on this site
  3. [68] ↑ . wikidata.org. → on this site
  4. [74] ↑ . wikidata.org. → on this site
  5. [80] ↑ . wikidata.org. → on this site
  6. [86] ↑ . wikidata.org. → on this site
  7. [59] ↑ . wikidata.org. → on this site
  8. [61] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [65] ↑ . Wikidata. wikidata.org. → on this site
  2. [67] ↑ . Wikidata. wikidata.org. → on this site
  3. [69] ↑ . Wikidata. wikidata.org. → on this site
  4. [70] ↑ . Wikidata. wikidata.org. → on this site
  5. [71] ↑ . Wikidata. wikidata.org. → on this site
  6. [72] ↑ . Wikidata. wikidata.org. → on this site
  7. [73] ↑ . Wikidata. wikidata.org. → on this site
  8. [75] ↑ . Wikidata. wikidata.org. → on this site
  9. [76] ↑ . Wikidata. wikidata.org. → on this site
  10. [77] ↑ . Wikidata. wikidata.org. → on this site
  11. [78] ↑ . Wikidata. wikidata.org. → on this site
  12. [79] ↑ . Wikidata. wikidata.org. → on this site
  13. [81] ↑ . Wikidata. wikidata.org. → on this site
  14. [82] ↑ . Wikidata. wikidata.org. → on this site
  15. [83] ↑ . Wikidata. wikidata.org. → on this site
  16. [84] ↑ . Wikidata. wikidata.org. → on this site
  17. [85] ↑ . Wikidata. wikidata.org. → on this site
  18. [87] ↑ . Wikidata. wikidata.org. → on this site
  19. [88] ↑ . Wikidata. wikidata.org. → on this site
  20. [89] ↑ . Wikidata. wikidata.org. → on this site
  21. [90] ↑ . Wikidata. wikidata.org. → on this site
  22. [60] ↑ . Wikidata. wikidata.org. → on this site

Aggregate / graph-position facts

  1. [7] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [62] ↑ . Wikidata sitelinks. wikidata.org.
  3. [63] ↑ . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Calyampudi Radhakrishna Rao. Retrieved October 14, 2026, from https://4ort.xyz/entity/calyampudi-radhakrishna-rao
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · Anti-Strange-Ipek-Action · 2026-09-06 view diff on Wikidata ↗
    National library of latvia id → 000045027, 000130434
    "/* wbcreateclaim-create:1| */ National library of latvia id: 000130434, [[:toollabs:quickstatements/#/batch/270930|batch #270930]]"
  2. 18w ago · Jindřich Rubeš · 2026-06-11 view diff on Wikidata ↗
    Svkkl authority id → p0034604-Rao-C-Radhakrishna-19202023
    "/* wbcreateclaim-create:1| */ Svkkl authority id: p0034604-Rao-C-Radhakrishna-19202023, [[:toollabs:quickstatements/#/batch/259497|batch #259497]]"
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