Ronald Fisher

Biolegydd ac ystadegydd oedd Syr Ronald Aylmer Fisher (17 Chwefror 1890 – 29 Gorffennaf 1962). Fe ddatblygodd llawer o ddulliau Ystadegaeth Glasurol, ac roedd yn weithgar ym meysydd Bioleg esblygiadol a Geneteg. Disgrifwyd ef gan Anders Hald fel "athrilyth a greodd sylfaeni gwyddoniaeth ystadegau cyfoes ar ei ben ei hun bron a bod" a disgrifiodd Richard Dawkins ef fel "y gorau o olynwyr Darwin"

Bywgraffiad 
Ganwyd Fisher yn East Finchley, Llundain, yn fab i George a Katie Fisher. Roedd ei dad yn deilwr celfyddyd gain llwyddiannus. Cafodd blentyndod hapus, gyda thair chwaer a oedd yn dwli arno, a brawd hŷn. Bu farw ei fam pan oedd yn 14 oed a fe gollodd ei dad ei fusnes 18 mis yn ddiweddarach ar ôl cyfres o ddeiliadau a ystyrwyd yn wael.

Llyfryddiaeth

Dewis o 395 o erthyglau Fisher 
Mae rhain ar gael ar wefan Prifysgol Adelaide :
 "Frequency distribution of the values of the correlation coefficient in samples from an indefinitely large population." Biometrika, 10: 507-521. (1915)
 "The correlation between relatives on the supposition of Mendelian inheritance"  Trans. Roy. Soc. Edinb., 52: 399-433. (1918). Yn y papur hwn y cyflwynwyd y gair amrywiant i'r theori tebygrwydd ac ystadegau am y tro cyntaf.
 "On the mathematical foundations of theoretical statistics " Philosophical Transactions of the Royal Society, A, 222: 309-368. (1922)
 "On the dominance ratio. Proc. Roy. Soc. Edinb., 42: 321-341. (1922)
 "On a distribution yielding the error functions of several well known statistics" Proc. Int. Cong. Math., Toronto, 2: 805-813. (1924)
 "Theory of statistical estimation" Trafodion Cymdeithas Athronyddol Caergrawnt, 22: 700-725 (1925)
 "Applications of Student's distribution" Metron, 5: 90-104  (1925)
 "The arrangement of field experiments" J. Min. Agric. G. Br., 33: 503-513. (1926)
 "The general sampling distribution of the multiple correlation coefficient" Proceedings of Royal Society, A, 121: 654-673 (1928)
 "Two new properties of mathematical likelihood" Proceedings of Royal Society, A, 144: 285-307 (1934)

Llyfrau gan Fisher 
Manylion cyhoeddi llawn ar gael ar wefan Prifysgol Adelaide :
 Statistical Methods for Research Workers (1925) ISBN 0-05-002170-2.
 The Genetical Theory of Natural Selection (1930) ISBN 0-19-850440-3.
 The design of experiments (1935) ISBN 0-02-844690-9
 The use of multiple measurements in taxonomic problems (yn Annals of Eugenics 7/1936)
 Statistical tables for biological, agricultural and medical research (1938, cydawdur:Frank Yates)
 The theory of inbreeding (1949) ISBN 0-12-257550-4, ISBN 0-05-000873-0
 Contributions to mathematical statistics, John Wiley, (1950)
 Statistical methods and scientific inference (1956) ISBN 0-02-844740-9
 Collected Papers of R.A. Fisher (1971-1974). Pum cyfrol.  Prifysgol Adelaide.

Bygraffiadau am Fisher 
 Box, Joan Fisher (1978) R. A. Fisher: The Life of a Scientist, Efrog Newydd: Wiley, ISBN 0-471-09300-9. Rhagair 
 Frank Yates a Kenneth Mather (1963) "Ronald Aylmer Fisher " yn Biographical Memoirs of Fellows of the Royal Society of London 9: 91-120.

Llenyddiaeth eilaidd 
 Edwards, A.W.F., 2005, "Statistical methods for research workers" yn Grattan-Guiness, I., gol., Landmark Writings in Western Mathematics. Elsevier: 856-70.

Cyfeiriadau

Dolenni allanol 
 O'Connor, John J. & Robertson, Edmund F., "Ronald Fisher", Archif Hanes Mathemateg MacTutor
 A Guide to R. A. Fisher by John Aldrich
 Earliest Known Uses of Some of the Words of Mathematics for Fisher’s contribution to the language of statistics
 University of Adelaide Library for bibliography, biography, 2 volumes of correspondence and many articles 
 Classics in the History of Psychology for the first edition of Statistical Methods for Research Workers
 A collection of Fisher quotations compiled by A. W. F. Edwards
 Ronald Fisher - Mathematics Genealogy Project
 Sawilowsky, Shlomo S. (2002). Fermat, Schubert, Einstein, and Behrens-Fisher: The Probable Difference Between Two Means When σ1 ≠ σ2  Journal of Modern Applied Statistical Methods, 1(2).

Biolegwyr Seisnig
Ewgeneg
Genedigaethau 1890
Genetegwyr
Marwolaethau 1962
Pobl o Lundain
Ystadegwyr Seisnig