Egon Sharpe Pearson (Hampstead, 11 August 1895 – London, 12 June 1980) was the only son of Karl Pearson, and like his father, a leading British statistician. Events 2492 BC - Traditional date of the defeat of Bel by Hayk, progenitor and founder of the Armenian nation Year 1895 ( MDCCCXCV) was a Common year starting on Tuesday (link will display full calendar of the Gregorian calendar (or a Common year London ( ˈlʌndən is the capital and largest urban area in the United Kingdom. Events 1381 - Peasants' Revolt: in England, rebels arrive at Blackheath. Year 1980 ( MCMLXXX) was a Leap year starting on Tuesday (link displays the 1980 Gregorian calendar) Karl Pearson FRS ( March 27 1857 &ndash April 27 1936) established the disciplineof Mathematical statistics. Statisticians work with theoretical and applied Statistics in both the private and public sectors He went to Winchester School and Trinity College, Cambridge, and succeeded his father as professor of statistics at University College London and as editor of the journal Biometrika. Winchester College is a well-known boys' Independent school, and an example of an English Public school, in the city of Winchester in Hampshire Trinity College is a constituent college of the University of Cambridge in Cambridge, England. University College London ( UCL) is a multi-faculty university institution based in the United Kingdom and a constituent college of the University of London Biometrika is a Scientific journal principally covering theoretical Statistics. He was President of the Royal Statistical Society in 1955–56, and was awarded its Guy Medal in Gold in 1955. The Royal Statistical Society (RSS is a Learned society for Statistics and a Professional body for Statisticians in the UK. The Guy Medals are awarded by the Royal Statistical Society in three categories Gold Silver and Bronze Pearson is best known for development of the Neyman-Pearson lemma of statistical hypothesis testing. In Statistics, the Neyman-Pearson lemma states that when performing a hypothesis test between two point hypotheses H 0 
On 31 August 1934 Egon Pearson had married (Dorothy) Eileen (1901/2–1949), younger daughter of Russell Jolly, solicitor; they had two daughters. It was a great personal loss when his wife died from pneumonia in 1949, though he kept on their Hampstead house with the aid of a housekeeper, until 1967 when he moved to Cambridge after marrying (on 11 January) Margaret Theodosia (1896/7–1975), widow of Laurence Beddome Turner, reader emeritus in engineering, Cambridge, and second daughter of George Frederick Ebenezer Scott, architect, and Mrs Bernard Turner, of Godstowe School, High Wycombe.