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__NOTOC__ Rao may refer to:


Geography

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Rao, West Sumatra The Provinces of Indonesia, province of the West Sumatra in Indonesia is divided into ''kabupaten'' or Regencies of Indonesia, regencies which in turn are divided administratively into districts of Indonesia, districts or ''kecamatan''. Specially ...
, one of the districts of West Sumatra, Indonesia *
Råö Råö is a locality in Kungsbacka Municipality, Halland, Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Ge ...
, a locality in Kungsbacka Municipality, Halland County, Sweden


Transport

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Dr. Leite Lopes–Ribeirão Preto State Airport Dr. Leite Lopes State Airport is the airport serving Ribeirão Preto, Brazil. It is operated by Rede Voa. History Dr. Leite Lopes State Airport was opened on April 2, 1939, and soon after, in 1940, the runway was extended for the first time. I ...
, IATA code RAO, serving Ribeirão Preto, Brazil


Fictional entities

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Rao (comics) Rao is a fictional star in the DC Comics Universe. It is the red giant (in some continuities, red dwarf) that the planet Krypton orbited. The title also refers to a supervillain of the same name and same Kryptonian etymology. He is also the ancest ...
, a fictional star in the DC Universe; Superman's planet Krypton revolved around it * Rao (''Greyhawk''), god of peace, reason, and serenity in ''Dungeons & Dragons: World of Greyhawk'' * ''Raō'', the Japanese name for
Raoh is a fictional character in the ''Fist of the North Star'' manga franchise by Buronson and Tetsuo Hara. He is the eldest of four honorary brothers (including the protagonist Kenshiro) who trained in the ancient assassination art of Hokuto Shink ...
, a character in ''Fist of the North Star''


Mathematics

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Cramér–Rao bound In estimation theory and statistics, the Cramér–Rao bound (CRB) expresses a lower bound on the variance of unbiased estimators of a deterministic (fixed, though unknown) parameter, the variance of any such estimator is at least as high as the in ...
, a statistical concept *
Rao–Blackwell theorem In statistics, the Rao–Blackwell theorem, sometimes referred to as the Rao–Blackwell–Kolmogorov theorem, is a result which characterizes the transformation of an arbitrarily crude estimator into an estimator that is optimal by the mean-squa ...
, a theorem in statistics


Science

* ''Rao'' (insect), a genus of wasps in the subfamily Platygastrinae *
Recent African origin of modern humans In paleoanthropology, the recent African origin of modern humans, also called the "Out of Africa" theory (OOA), recent single-origin hypothesis (RSOH), replacement hypothesis, or recent African origin model (RAO), is the dominant model of the ...
(RAO), a paleoanthropological theory *
Recurrent airway obstruction Recurrent airway obstruction, also known as broken wind, heaves, wind-broke horse, or sometimes by the term usually reserved for humans, chronic obstructive pulmonary disease or disorder (COPD) – it is a respiratory disease or chronic conditio ...
(RAO), a respiratory disease in horses *
Response amplitude operator In the field of ship design and design of other floating structures, a response amplitude operator (RAO) is an engineering statistic, or set of such statistics, that are used to determine the likely behavior of a ship when operating at sea. Known by ...
(RAO), a function relating a response to an input given the input frequency


Titles

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Rao (title) ''Rai'' ( ur, , ; bn, রায়) is a historical title of royalty and nobility in the Indian subcontinent used by rulers and chieftains of many princely states. It is derived from ''Raja'' (king, prince or chief). The Marathi/Telugu variant ...
, cognate Hindi variations of the (originally Hindu) title Raja(h) *
Rao Bahadur __NOTOC__ Rao may refer to: Geography * Rao, West Sumatra, one of the districts of West Sumatra, Indonesia * Råö, a locality in Kungsbacka Municipality, Halland County, Sweden Transport * Dr. Leite Lopes–Ribeirão Preto State Airport , IAT ...
, a title of honour issued by the British in India


Other uses

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Rao (Indian surname) Rao is a title and a surname native to India. It is used mostly in states of Gujarat, Haryana, Rajasthan, Andhra Pradesh, Telangana, Karnataka and Maharashtra. As a surname Notable people with this surname or title include the following: Pre- ...
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Rao (Chinese surname) Rao () is a Chinese family name. It can also be spelled as "Yow" or "Yaw". The surname Rao is approximately 2200 years old, and originated in the area near present-day Linfen county in Shanxi province. It is the 181st most common name being share ...
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Rao language Rao is a Ramu language of western Madang Province, Papua New Guinea. In older literature it was called ''Annaberg''. References

Middle Ramu languages Languages of Madang Province {{papuan-lang-stub ...
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Rao's Rao's () is a Southern Italian restaurant founded in 1896. It is located at 455 East 114th Street, on the corner of Pleasant Avenue in East Harlem, New York City. Rao's has sister restaurants in Los Angeles and Las Vegas, Nevada. History The res ...
, an Italian restaurant in New York City, USA named after its founder, Joshua Anthony Rao {{disambiguation, geo