Margarita Ruseva is an associate professor in statistics, demography, and business analytics at the University of Plovdiv “Paisii Hilendarski.” She holds a Ph.D. in statistics and demography from the University of National and World Economy, Bulgaria. Her fields of interest include big data analytics, applied econometrics, financial econometrics, multivariate statistical methods, panel data methods and models, statistical machine learning, and time series and forecasting. The applied part of her research focuses on the use of statistical methods to address problems arising in various disciplines, including management, marketing, finance, accounting, statistics, economics, and tourism.