The diagrams illustrate how much time students spent studying for an exam and the average marks achieved. The pie chart categorizes students based on the number of hours they spent studying, while the bar graph shows the average scores achieved by each group.
According to the pie chart, the largest proportion of the students (38%) studied for 51-75 hours, and the second largest group (30%) studied around 76-100 hours. These two groups also achieved a relatively high average marks, approximately 75 and 90, respectively. This suggest that most students followed an effective study range were rewarded with a strong exam result.
Oppositely, students who studied the least (0-25 hours), making up only 9% of the total, and scored the lowest, around 40 marks. Similarly, the small group full of ambitious students (101-125 hours) earned slightly lower marks than the 76-100 hour group, indicating that excessive study does not necessarily guarantee a better result.
Overall, these graphs suggest that student who follows an effective study range will be rewarded with strong exam results. While more study generally improves scores, there may be a point after which extra hours might earn lower grades.