A line chart compares average math scores between male and female students across six parental education levels, from some high school to master’s degree. It shows that scores generally rise with education level, with females slightly outperforming males at most levels. The visualization loads the CSV data with d3.csv, aggregates using d3.rollups and d3.mean, and renders an SVG via d3.axisBottom, d3.axisLeft, and d3.line. Point markers include tooltips with exact averages, and a legend distinguishes the two gender lines.