who was he?
He was an English mathematician and biostatistician.
Karl Pearson
Karl Pearson (; born Carl Pearson; 27 March 1857 – 27 April 1936) was an English mathematician and biostatistician. 
what type of dog is a blue heeler UNANSWERABLE what type of dog is an australian cattle? It is a breed of herding dog originally developed in Australia for droving cattle over long distances across rough terrain. how long do they live on an average? A survey of 100 deceased dogs yielded a mean longevity of 13.41 years with a standard deviation of 2.36 years. what is this deviation? In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. by whom was it developed? Karl Pearson.
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Karl Pearson [SEP] Introduction
Karl Pearson (; born Carl Pearson; 27 March 1857 – 27 April 1936) was an English mathematician and biostatistician. He has been credited with establishing the discipline of mathematical statistics. He founded the world's first university statistics department at University College, London in 1911, and contributed significantly to the field of biometrics and meteorology. Pearson was also a proponent of social Darwinism and eugenics. Pearson was a protégé and biographer of Sir Francis Galton. He edited and completed both William Kingdon Clifford's "Common Sense of the Exact Sciences" (1885) and Isaac Todhunter's "History of the Theory of Elasticity", Vol. 1 (1886–1893) and Vol.