This line chart shows the relationship between study hours and average grades, displaying five study-hour groups from 0-2 hours up to 8-10 hours. Built with ECharts 5.3.1, the visualization loads data from a CSV file containing synthetic student records, parses it with a custom parser, and calculates mean grades per group. The line chart reveals how academic performance varies across different study-hour ranges, with the data filtered to include only records with valid gaming, study, and grade values.