Dr. Ekaterina Tosheva is an associate professor in the Department of Statistics and Econometrics at the University of National and World Economy (UNWE) in Sofia, Bulgaria. Her primary research interests lie in the field of social statistics, including statistical research in education, quality of statistical information, and the application of statistical methods in marketing and sociological research. She teaches courses on applied statistics, data analysis, data preparation, and exploratory data analysis in both undergraduate and graduate programs. She is also a co-lecturer for a special course on Statistical Research Methods and Models for PhD students and the author of webinars on "SHARE - Survey of Health, Ageing, and Retirement in Europe data analysis" for both beginner and advanced social researchers.