Shelby HabermanShelby Haberman is a statistician with substantial experience in educational testing. He currently works as an independent consultant. Previously he taught at the University of Chicago, Hebrew University, and Northwestern University and was later empoyed by the Educational Testing Service. He is a fellow of the Institute of Mathematical Statistics, the American Statistical Association, and the American Academy for the Advancement of Science and was the 2019 recipient of the NCME Award for Career Contributions to Educational Measurement. Haberman is the author of 'The Analysis of Frequency Data,' 'Analysis of Qualitative Data,' and 'Advanced Statistics.' Read More Read Less