| Ph.D. | 1966 | Stanford University, 1962-1966 |
| M.S. | 1964 | Stanford University |
| University of Indiana, 1960-1962 |
| B.S. | 1960 | California Institute of Technology, 1956-1960 |
| 1990-present | Professor of Statistics, Harvard University, Statistics Department |
| 1990-present | Professor, Harvard Medical School, Department Health Care Policy |
| 1978-present | Consultant, RAND Corporation, Santa Monica |
| 1994-2000 | Chair, Harvard University, Statistics Department |
| 1989 | Visiting Professor, Harvard University |
| 1983-1990 | Director, Center for Statistical Sciences, UT |
| 1978-1990 | Professor of Statistics, The University of Texas, Austin |
| 1979-1982 | Consultant, System Development Corporation |
| 1977-1980 | Consultant, Educational Testing Service |
| 1975 | Visiting Lecturer, Stanford University, Statistics Department |
| 1970-1978 | Faculty, RAND Graduate School |
| 1970 | Visiting Lecturer, Harvard University |
| 1967-1978 | Senior Statistician, RAND Corporation, Santa Monica |
| 1966 & 1967 | Research Associate, Stanford University, Statistics Department |
| 1965-1967 | Assistant Professor, Math, University of California, Santa Cruz |
| 1961-1963 |
Summers: Lockheed, Sunnyvale, CA; IBM, Poughkeepsie, NY; General Dynamics, San Diego, CA |