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Born: 22 Feb 1796 in Ghent, Flanders, Belgium
Lambert Adolphe Jacques Quetelet was a Belgian mathematician, astronomer, statistician, and sociologist known for his pioneering application of statistics and the theory of probability to social phenomena, especially crime. Quetelet presented in Sur l'homme et le developpement de ses facultes, essai d'une physique sociale (1835) his conception of the average man as the central value about which measurements of a human trait are grouped according to the normal curve. He organised the first international statistics conference in 1853. At an observatory in Brussels that he established in 1833 at the request of the Belgian government, he worked on statistical, geophysical, and meteorological data, studied meteor showers and established methods for the comparison and evaluation of the data. Image: from a 1974 Belgian postage stamp
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