Data visualization focuses on presenting data in a graphical format. This include guidelines and principles for creating intuitive, consistent, and accessible visual representations of data. These could be charts, graphs, maps, or other visual formats that help users understand complex data sets and identify patterns or correlations.

Data visualization lays down the standards for color usage, typography, grid layout, and other design elements specific to data visualization. It also covers principles for maintaining accessibility, readability, and interpretability of data across different visualizations.