CV

COLLEGE FACULTY POSITIONS

Lawrence University, Appleton, WI
Associate Professor of Statistics: 2024-present
Assistant Professor of Statistics: 2018-2024

EDUCATION

Iowa State University, Ames, IA
Degree: Ph.D. in Statistics 2018
Dissertation Title: Random forest robustness, variable importance and tree aggregation
Advisors: Ulrike Genschel, Dan Nettleton

Iowa State University, Ames, IA
Degree: M.S. in Statistics 2015
Master’s Project: Predicting student retention in STEM: A random forest based approach
Advisor: Dan Nettleton

Miami University, Oxford, OH
Degree: M.S. in Mathematics 2013
Master’s Project: Calculation of cell bounds for contingency tables from rounded conditional frequencies
Advisor: Stephen Wright

The College of Wooster, Wooster, OH
Degree: B.A. in Mathematics 2007
Summa Cum Laude

TEACHING EXPERIENCE

Lawrence University, Appleton, WI Times Taught (Span) Assistant/Associate Professor of Statistics

  • STAT 107: Principles of Statistics: 9 sections (2018-24)
  • STAT 255: Statistics for Data Science: 8 sections (2020-23)
  • CMSC/STAT: Data-Scientific Programming: 6 sections (2020-24)
  • STAT 455: Advanced Statistical Modeling: 4 sections (2021-24)
  • MATH 340: Probability (previously MATH 240): 2 sections (2018, 22)
  • STAT 450: Bayesian Statistics: 1 sections (2020)
  • MATH 430: Statistical Modeling: 1 sections (2019)
  • FRST 100: First-Year Studies: 2 sections (2019-20)
  • Advised 20 Chandler Senior Experiences and co-advised 6 others

Iowa State University, Ames, IA
Graduate teaching assistant, Department of Statistics Courses taught as instructor:
* STAT 231: Probability and Statistics for Engineering S17, F18, S18
* STAT 330: Probability and Statistics for Computer Science F16
* STAT 104: Introductory Statistics F14
* Lab instructor for STAT 421Survey Sampling Techniques S14

Miami University, Oxford, OH
Graduate teaching assistant, Department of Mathematics Courses taught as instructor:
* Math 151: Calculus I S13
* Math 123: Precalculus F11, S12, F12

Bloomfield High School, North Bloomfield, OH 2007-11 High school mathematics teacher

Ashtabula County Joint Vocational School, Jefferson, OH 2007-08 High school mathematics summer school teacher

PEER-REVIEWED PUBLICATIONS

Sage, A. J., Liu+, Y., & Sato+, J. (2022). From black box to shining spotlight: Using random forest prediction intervals to illuminate the impact of assumptions in linear regression. The American Statistician, 76(4), 414-429.

Smith, J. G., Sage, A. J., McGlenn+, M., Robbins, J., & Garmon, S. L. (2022). Is Sexual Racism Still Really Racism? Revisiting Callander et al.(2015) in the USA. Archives of Sexual Behavior, 51(6), 3049-3062.

Sage, A.J., Genschel, U., Nettleton, D. (2021). A residual-Based approach to robust random forest regression. Statistics and its Interface. 14(4), 389-402.

Sage, A. J., Cervato, C., Genschel, U., & Ogilvie, C. A. (2021). Combining academics and social engagement: A major-specific early alert method to counter student attrition in science, technology, engineering, and mathematics. Journal of College Student Retention: Research, Theory & Practice, 22(4), 611-626.

Sage, A.J., Genschel, U., Nettleton, D. (2020). Tree aggregation for random forest class probability estimation. Statistical Analysis and Data Mining: The ASA Data Science Journal. 13(2), 134-150.

Sage, A. J., & Wright, S. E. (2016). Obtaining cell counts for contingency tables from rounded conditional frequencies. European Journal of Operational Research, 250(1), 91-100.

+denotes undergraduate student author advised by A.J. Sage

UNDERGRADUATE RESEARCH MENTORED

Undergraduate research publication co-advised (with Jonathan Lhost): Brickley, D. (2022). The Effect of Academic Performance on Athletic Success in Collegiate Athletic Programs. SIAM Undergraduate Research Online, DOI: 10.1137/22S1491216

Lawrence University Summer Research Fellows * Nina Austria (2022) * Nafis Ahmed Nunim (2022) * Maggie McGlenn (2020) – co-advised with Jesus Smith * Johanna Kopecky (2019) * Katherine Liu (2019) * Joe Sato (2019)

SERVICE

  • Lawrence University Committees
    • Governance Committee (2024-25 & 2025-26)
    • Curriculum Committee (2022-23 & 2023-24)
    • First-Year Studies Committee, (2020-21 & 2021-22)
    • Internal Review Board, (2019-20)
  • Phi Beta Kappa Lawrence University Delta-Gamma Chapter
    • President (2022-23 & 2023-24)
    • Vice President (2020-21 & 2021-22)
  • Reviewer for articles in
    • The American Statistician (2023 & 2024)
    • Journal of Statistics and Data Science Education (2023 & 2024)
    • AIMS Mathematics (2022)
    • PLOS One (2021)
    • Numeracy (2019)
    • SIAM Undergraduate Research Online (2018)
  • Judge for Undergraduate Statistics Project Competition (USPROC), Fall 2018, Spring 2019, Spring 2020

GRANT RECEIVED

Sage, A.J. (primary investigator), Del Toro, I., Oesper, L., Weinman, J., Exploring solutions for high performance computing at ACM institutions, Associated Colleges of the Midwest Faculty Career Enhancement grant, $25,637 o Organized virtual workshop attended by 27 ACM faculty and staff (June 21-23, 2021)