The provided pie chart illustrates the proportion of students who spent different amounts of time studying for exams, whereas the bar graphs show the average mark students by the time they spent preparing.
Overall, it is clearly seen that the majority of students spent 51-75 hours studying for exams while the highest marks was obtained by students who spent 76-100 on studying over the period given.
On having a cursory glance at the pie chart, it is lucid that 51-75 hours were spent by 38% students studying for exams and almost one-third of them were studying for 76-100 hours. Nearly 18% of students spent 25-50 hours during studies ,whereas half of them were studying for 101-125 hours. The remaining 5% students are studying 101-125 hours for the test.
Turning to the bar graph, the average marks of students were 90 who spent 76-100 hours studying and the students who spent 0-25 hours obtained less score than the former one by almost 50. Furthermore, 80 marks were acquired by the students who studied for 101-175 hours. However, the students who spent 26-50 hours on studies got 60 scores while students obtained almost 70 marks by studying for 51-75 hours for preparation of the test.