Irénée-Jules Bienaymé
| Irénée-Jules Bienaymé | |
|---|---|
Irénée-Jules Bienaymé
|
|
| Born |
28 August 1796 Paris |
| Died | 19 October 1878 (aged 82) Paris |
| Nationality | French |
| Fields | Statistics |
| Known for |
Bienaymé–Chebyshev inequality Bienaymé formula |
Irénée-Jules Bienaymé (28 August 1796 – 19 October 1878), was a French statistician. He built on the legacy of Laplace generalizing his least squares method. He contributed to the fields of probability and statistics, and to their application to finance, demography and social sciences. In particular, he formulated the Bienaymé–Chebyshev inequality concerning the law of large numbers and the Bienaymé formula for the variance of a sum of uncorrelated random variables.
With Irénée-Jules Bienaymé ends the line of great French probability thinkers that began with Pascal and Fermat, then continued with Laplace and Poisson. After Bienaymé, progress in statistics took place in the UK and Russia.
His personal life was marked by bad fortune. He studied at the Lycée de Bruges and then at the Lycée Louis-le-Grand in Paris. After participating in the defense of Paris in 1814, he attended the École Polytechnique in 1815. Unfortunately that year's class was excluded in the following year by Louis XVIII because of their sympathy for Bonapartists.
In 1818, he lectured on mathematics at the Académie militaire de Saint-Cyr but, two years later, he entered the Finance Ministry. He was rapidly promoted, first to inspector, then to inspector general. But the new Republican administration removed him in 1848 for his lack of support for the Republican regime.
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