This visualization displays the gender distribution of students across university modules using stacked bar charts, with each bar representing a module’s female and male enrollments. It supports toggling between absolute counts and percentage views via radio buttons, triggering animated transitions that rescale the bars. The chart uses D3.js v3’s ordinal and linear scales, stacked layout, and SVG rendering, with data loaded from a CSV file. Tooltips and a categorical color legend enhance interactivity, while axis labels and rotated module names aid readability.