This visualization displays the relationship between study time and exam marks for individual students, using a scatter plot with semi-transparent circular marks. It is built with the Vega-Lite API, a high-level grammar for declarative visualization, which compiles specifications into Vega and renders them as SVG. The code reads student data from a remote CSV file via `d3.csv`, and incorporates a custom `config` object to adjust axis styling and label appearance. Tooltips are enabled through the Vega Tooltip handler, allowing users to inspect exact mark values.