Data visualization is a research field and methodological approach concerned with the creation and study of visual representations of data. It investigates the principles, techniques, and effectiveness of transforming abstract data into graphical forms to facilitate human understanding, analysis, and communication of patterns, relationships, and insights within complex datasets. Key characteristics include the systematic mapping of data attributes to visual properties, often incorporating interactive elements to support exploration and discovery, and its significance lies in enhancing cognitive processing and enabling data-driven decision-making across diverse disciplines.