Henri Theil


Henri Theil was a Dutch econometrician, Professor at the Netherlands School of Economics in Rotterdam, known for his contributions to the field of econometrics.

Biography

Born in Amsterdam, Theil started to study mathematics and physics at Utrecht University in 1942. Later in World War II he was arrested and was imprisoned in Vught. After the war he started to study Economics at the Gemeente-Universiteit Amsterdam, where in 1951 he received his PhD under Pieter Hennipman.
After graduation Theil started working as researcher for the Bureau for Economic Policy Analysis under Jan Tinbergen. In 1953 he was appointed Professor of Econometrics at the Netherlands School of Economics as successor of Jan Tinbergen. Here he founded the Econometric Institute in 1956, which he directed for ten years and was then succeeded by Jan Sandee. He also wrote Principles of Econometrics. In 1966 he moved to the United States, where he was appointed Professor of Econometrics and director of the Center for Mathematical Studies in Business and Economics at the University of Chicago. He also taught at the University of Florida.
Theil was awarded honorary degrees by the University of Chicago in 1964, by the Vrije Universiteit Brussel in 1973 and by the Erasmus University Rotterdam in 1983. In 1968 he was elected as a Fellow of the American Statistical Association. In 1980 he became correspondent of the Royal Netherlands Academy of Arts and Sciences.

Work

Theil is most famous for his invention of the widely used two-stage least squares method in 1953. This estimation technique greatly simplified estimation of simultaneous equation models of the economy and came into widespread use for this purpose.
He is also famous for the Theil index, a measure of entropy, which belongs to the class of Kolm-Indices and is used as an inequity indicator in econometrics. He is also responsible for the Theil–Sen estimator for robust regression. Theil's archives are kept at Hope College.

Publications

Theil has published a series of books and numerous articles. Books:
;About Theil
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