SIG-Educational Statisticians

Marilyn S. Thompson, Arizona State University

Group Comparisons Using ANCOVA: A Comparison of Five Analytic Approaches - Lu Liu, Florida State University; Yanyun Yang, Florida State University

Contextual Effects in Multilevel Models: A Discussion of Centering Strategies From a Graphical Models Perspective - Yi Feng, University of California - Los Angeles; Peter M. Steiner, University of Maryland

Planned Missingness With Purposefully Selected Samples - Menglin Xu, The Ohio State University; Jessica Logan, The Ohio State University

Rate Ratio in Multiple Baseline Designs Using Hierarchical Poisson Regression Models - Prathiba Natesan Batley, University of Louisville; Larry V. Hedges, Northwestern University

Matthew Ryan Lavery, South Carolina Education Oversight Committee