Thorvald Nicolai Thiele (24 December 1838 – 26 September 1910) was a w:Danish w:astronomer and director of the w:Copenhagen Observatory. He was also an w:actuary and w:mathematician, most notable for his work in statistics, interpolation and the three-body problem.
Thiele made notable contributions to the statistical study of random time series and introduced the w:cumulants and w:likelihood functions, and was considered to be one of the greatest statisticians of all time by w:Ronald Fisher. In the early 1900s he also developed and proposed a generalisation of approval voting to multiple winner elections called sequential proportional approval voting, which was briefly used for party lists in Sweden when proportional representation was introduced in 1909.
- Schmadel, Lutz D. (2007). "(1586) Thiele". Dictionary of Minor Planet Names – (1586) Thiele. Springer Berlin Heidelberg. pp. 125–126. doi:10.1007/978-3-540-29925-7_1587. ISBN 978-3-540-00238-3.
- Jerzy Neyman, “Note on an Article by Sir Ronald Fisher,” Journal of the Royal Statistical Society, Series B (Methodological), 18, 2 (July 1956): 288–294, Template:Doi.
- http://journals.lub.lu.se/index.php/st/article/view/1949/1528&usg=ALkJrhiuUQ1zCqZHnca_-iAmk1KpNqMtmg (Archived here: archiveforthis on 2015-06-18)