**Sandra Ferreira**

Sandra Ferreira is an assistant professor at the Department of Mathematics at the University of Beira Interior. She received a Master's degree in Applied Mathematics from Evora University ´ (2000) and a Ph.D. in Mathematics at the University of Beira Interior (2006). She is a researcher at the Center of Mathematics and Applications, in the Physics and Mathematical Modeling research group. She is also a researcher (external collaborator) at the Center for Mathematics and Applications (CMA), NOVA School of Science and Technology | FCT NOVA, in the Statistics and Risk Management research group. Her research interests include mathematical statistics; statistical analysis, modeling, and inference; applied and computational statistics; R Statistical Package; sample size; mixed, linear, and linear mixed models; data analysis models; F-Tests; applied mathematics; applied probability and probability theory; random sampling; confidence intervals; linear regression; multivariate, descriptive, and nonparametric statistics; and regression analysis. Her publications and current research interests focus on statistical inference for estimable functions and variance components in linear mixed models with commutative orthogonal block structure (COBS). Her research group is currently working on the project "Estimation in Mixed Linear Models—MLM". She has authored 78 scientific papers, receiving more than 340 citations (H-index 10). She was also awarded the "Mathematical sciences sponsorship fund" (2018) by Elsevier.
