#OTD 1875 Henry Lewis Rietz b (d 7 Dec 1943) ASA Fellow 1923, ASA Vice-President 1925. A leader in establishing mathematical statistics in the US, he was founding member & first president of Institute of Mathematical Statistics IMS in 1935, editor for Annals of Mathematical Statistics #AmStatNews

#OTD 1857 George E Roberts b (d 6 Jun 1948) ASA Fellow 1916; 15th ASA President 1920. Economist & Director of the United States Mint 1898-1907, &1910-1914 #AMSTATNEWS

6/ Kaplan’s contributions have been scandalously overlooked. He never received an award - the 2004 ASA Wilks Award was given to Meier, specifically highlighting the KM method. Kaplan was not invited & “was not even notified about it”. Come on #AmStatNews

#OTD 1864 Kate Claghorn b (d 22 Mar 1938) First woman elected ASA #AmStatNews Fellow 1918 (and the only one until 1937). First woman to publicly receive a PhD from Yale 1896. Cofounder of the NAACP 1909. Did prescient work on social statistics, immigration, and juvenile socio-legal issues.

#OTD 13 Jan 1900 Gertrude Cox b(d 17 Oct 1978) ASA #amstatnews Fellow 1944, ASA President 1956, Fellow RSS Royal Statistical Society 1957, President IBS 1968; National Academy of Sciences 1975, founding member International Biometric Society 1947. /2

New York Times obituary 18 Jan 1983

OTD 1891 Helen Walker b (d 15 Jan 1983) ASA #AmStatNews Fellow 1940, 1st woman to be ASA President 1944, President Am Educational Research Association 1949. Best known for education research & history of statistics & statistical method. /3

#OTD 2000 Oscar Kempthorne d (b 31 Jan 1919) #AmStatNews Fellow 1952, Hon Fellow @RoyalStatSoc, Pres #IBS 1961 fellow #AAAS #ISI. Part of the #Rothamsted group 1941-6. His first course in statistics with John Wishart then reading RA Fisher changed his life /3