Associate Editor of the Journals Applied Stochastic Models in Business and Industry (2002 - ) and Journal of Statistical Distributions and Applications (2013 - ).
Chief Editor of the journal of Quality Technology and Quantitative Management (2004-2006).
Vice Chair, International Accreditation Committee formed by the Accreditation Council of the Ministry of Education and Culture of Cyprus for the evaluation of B.A., B.Sc. and MBA programs of higher education institutions in Cyprus (1997-2010).
Reviewer of Research Grants Council (RGC) - Hong Kong (2009 - ).
Professor Xekalaki was Chair of the Department of Statistics of the Athens University of Economics and Business (1989-1993 and 1996-2000), Director of the Graduate Program of the Department of Statistics of the Athens University of Economics and Business (1995-1997), Member of the Research Committee (1989-1993) and Member of the Senate (1989-1993 and 1996-2000) of the Athens University of Economics and Business, Consultant to the EUROSTAT (1987) and chaired the Committee for the revision of the Consumer Price Index of Greece (1996).
She has taught at the Department of Statistics, AUEB as a Professor (since 1989) and as an Associate Professor (1986-1989), The University of Crete (Greece), Department of Mathematics, (as an Associate Professor (1983-1986)), The University of Iowa (USA), Department of Statistics and Actuarial Science, (as an Associate Professor (1982-1983)), The University of Missouri-Columbia (USA), Department of Statistics, (as an Assistant Professor (1980-1982)), The University of Dublin, Trinity College (Ireland), Department of Statistics, (as a Lecturer (1979-1980)). She has visited the Department of Statistics, Trinity College, University of Dublin as a visiting Professor during the academic year 2002-3, the Department of Statistics, UC Berkeley, and the Department of Statistics and the Center of Deliberative Democracy, Department of Communication, Stanford University as a visiting scholar during the academic years 2004-5 (spring semester), 2005-6, 2008-09 (spring semester) and the academic year 2009-10.
She has published more than 60 papers in International Journals and has presented scientific papers in more than 30 international conferences in several of which as an invited speaker. Her research interests include Theoretical and Applied Statistics, Distribution Theory and Applications, Stochastic Model Evaluation, ARCH Models, Statistical Indices.
She is a fellow of the Royal Statistical Society, a member of the International Statistical Institute, and a member of the American Statistical Association.
* Το Οικονομικό Πανεπιστήμιο Αθηνών δεν φέρει καμία ευθύνη όσον αφορά στην ακρίβεια των στοιχείων του συνοπτικού και του πλήρους βιογραφικού των μελών του προσωπικού, όπως αυτά αναρτώνται στην ιστοσελίδα του. Η ευθύνη ανήκει αποκλειστικά και μόνο στους συντάκτες των βιογραφικών σημειωμάτων.