The graphs illustrate the number of students who studied for different amount of time for a test and the average score students obtained based on hours studied
Overall, it can be clearly seen that as the preparation time increases, students’ performance rises too
Firstly, the proportion of students, who spent on preparation between 51 and 75 hours was 38 percent, making the highest group. And the highest score for them achieved about mark 80. The next group of students conceded the highest by 8 per cent with 76 to 100 hours spent on studying. Their hard work let them have mark 90. Much more smaller group of students(only 18 percent) achieved mark sixty, with preparation time varying between 26 and 50 hours
In terms of the smallest students’ group, only 5 percent of them had mark 40, with time, spent on preparation, varying between 0 and 25 hour. Noticeably, only 9 percent of students spent the most time studying (between 101-125 hours), but it didn’t help them to surpass the highest score group. Their result didn’t exceed mark 80