The first chart illustrates the number of hours students spent preparing for an admission test for an Asian university. The accompanying chart demonstrates the average number of correct responses students scored in relation to the number of hours they studied.
The two figures show that there is a positive correlation between the average number of correct responses and the number of hours students spent preparing, except for one feature which is clear in the bar chart. Students who spent more than 126 hours studying scored fewer correct responses than those who spent 101 to 125 hours (78 versus 82).
It is easily recognisable that the less time individuals spent studying, the fewer correct answers they received. Students who worked fewer than 25 hours got approximately 30 correct responses. By contrast, the average number of correct responses for students who studied 51-100 hours was 76.
Overall, it may be inferred that the more time students allocated for studying, the greater results of the exam they achieved.
