Education
| Centralia Public Schools | 1925–35 |
| University of Illinois | 1935–41 |
| AB, 1938 | |
| AM, 1939 | |
| Ph.D., 1941, Mathematics |
Positions held
| 1941–42 | Rosenwald Fellow |
| Institute for Advanced Study | |
| Summer, 1942 | Assistant Statistician |
| OPA | |
| 1942–43 | Instructor |
| Southern University, Baton Rouge, LA | |
| 1943–44 | Instructor |
| Clark College, Atlanta, Georgia | |
| 1944–46 | Assistant Professor |
| Howard University, Washington, DC | |
| 1946–47 | Associate Professor |
| Howard University, Washington, DC | |
| 1947–54 | Professor and Head, Mathematics Department |
| Howard University, Washington, DC | |
| Summers, 1948–50 | Mathematician |
| Rand Corporation | |
| 1950–51 | Visiting Professor |
| Stanford University | |
| 1954–55 | Visiting Professor |
| University of California, Berkeley | |
| 1955–73 | Professor of Statistics |
| University of California, Berkeley | |
| 1957–61 | Chairman, Department of Statistics |
| University of California, Berkeley | |
| 1970–71 | Faculty Research Lecturer |
| University of California, Berkeley | |
| 1973–75 | Director, University of California Study Center |
| United Kingdom and Ireland (Education Abroad Program) | |
| 1973–2010 | Professor of Mathematics and Statistics |
| University of California, Berkeley |
Honorary degrees
| 1966 | D.Sc. (Honorary) | University of Illinois |
| 1969 | D.Sc. (Honorary) | Michigan State University |
| 1971 | D.Sc. (Honorary) | Southern Illinois University |
| 1980 | D.Sc. (Honorary) | Carnegie-Mellon University |
| 1987 | D.Sc. (Honorary) | National University of Lesotho |
| 1988 | D.Sc. (Honorary) | Amherst College |
| 1988 | D.Sc. (Honorary) | Harvard University |
| 1990 | D.Sc. (Honorary) | Howard University |
| 1990 | D.Sc. (Honorary) | Yale University |
| 1990 | D.Sc. (Honorary) | University of Warwick |
| 1991 | D.Sc. (Honorary) | Syracuse University |
| 1992 | D.Sc. (Honorary) | University of Southern California |
Professional service. Honors
| 1955 | President, Institute of Mathematical Statistics |
| 1965 | Elected to National Academy of Sciences |
| 1968 | Elected to American Academy of Arts & Sciences |
| 1968–71 | Vice-President, American Mathematical Society |
| 1972–73 | Chairman, Faculty Research Lecture Committee |
| 1973 | President, International Association for Statistics in the Physical Sciences |
| 1974 | W. W. Rouse Ball Lecturer, University of Cambridge, UK |
| 1975–78 | President, Bernoulli Society for Mathematical Statistics and Probability |
| 1975–77 | Vice-President, International Statistical Institute |
| 1976 | Elected Honorary Fellow, Royal Statistical Society |
| 1977 | Wald Lecturer, Institute of Mathematical Statistics |
| 1978 | Vice-President, American Statistical Association |
| 1979 | TIMS/ORSA John Von Neumann Theory Prize |
| 1986 | R.A. Fisher Award, Committee of Presidents of Statistical Societies |
| 1988 | The Berkeley Citation |
Membership in professional societies
National Academy of Sciences
American Association for Advancement of Science
American Academy of Arts and Sciences
Institute of Mathematical Statistics
American Mathematical Society
Royal Statistical Society
American Philosophical Society
