A smoothed radar chart compares three smartphone brands—iPhone, Samsung, and Nokia—across eight attributes such as Battery Life, Brand, and Contract Cost, with values encoded as percentages. The visualization uses D3.js to render SVG circles, radiating axes, and colored polygonal areas with rounded strokes, overlaid with an interactive legend and tooltip. It includes seven concentric grid levels with percentage labels and a glow filter for visual emphasis. The chart animates area transitions on hover, leveraging D3’s ordinal color scale and linear radius scaling to distinguish each phone model.