The response reports the principal rankings and figures accurately, with a useful overview of weekday similarity and weekend variation. However, the bars measure average study hours rather than individual session lengths, and the overview could explicitly identify lower weekend study time at every university.
8.0The introduction, overview and chart-by-chart details follow a clear sequence, marked by line breaks and transitions. Some long sentences carry several comparisons at once, and the final sentence needs a clearer link between its two-period ranking and the weekend figure of 5.6 hours.
8.0The response uses a varied vocabulary for numerical comparisons, but several collocations are awkward or imprecise, including “almost similar”, “study time took an average” and “the lowest recorded data”. More direct statistical phrasing would improve naturalness and precision.
8.0A wide range of structures, including complex sentences and accurate participle and relative clauses, is used with control, and errors are rare and non-impeding.
8.0