Power BI developers simplify statistical data for non-technical users by transforming complex figures into easy-to-understand visualizations such as bar charts, pie charts, line graphs, and heat maps. They use features like tooltips, slicers, and drill-throughs to enhance interactivity, allowing users to explore data without technical expertise. Power BI developer also design dashboards that highlight key statistical indicators, summarizing information into concise visuals with appropriate labels and descriptions. By focusing on user-friendly layouts and clear visual cues, Power BI developers help stakeholders interpret statistical data quickly, leading to better business decisions.