This scatter plot visualizes survey data from university students, showing the relationship between each respondent's age and their course of study, with points colored by their year of study (Year 1 through Year 4). The visualization uses D3.js v7 to load a CSV file from a GitHub gist and render an SVG chart with a linear x-axis for age and a point scale y-axis for course names. The code applies d3.scaleLinear, d3.scalePoint, and d3.scaleOrdinal to position and color the circles, while interactive tooltips appear on mouseover to display the exact age, course, and year for each data point.