Data visualization assists in decision-making processes by transforming complex data sets into easily understandable visual formats, such as charts, graphs, and dashboards. By presenting information visually, decision-makers can quickly identify trends, patterns, and insights that might be missed in raw data. This approach allows for more informed and timely decisions, as stakeholders can grasp information at a glance. Data visualization tools also facilitate better communication of findings across teams, promoting collaboration and a shared understanding.