Sir Ronald Aylmer Fisher, FRS (17 February 1890 – 29 July 1962) ahli statistik, evolusi biologi, jeung genetika Inggris. Richard Dawkins nyebutna "The greatest of Darwin's successors", jeung ahli sejarah statistik Anders Hald nyebutkeun "Fisher was a genius who almost single-handedly created the foundations for modern statistical science".

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