The graphs below show the test scores for students in different subject areas and the time the students spent studying for the tests.
Math Scores vs. Hours Spent Studying
Science Scores vs. Hours Spent Studying
100 fx.
100 1x
90
Test Score
8 8 8 8 8 8 8 8 9
Test Score
à 8 8 8 8 8 8
40
40
20
10
0.5 1 1.5 2 2.5 3 3.5 4 4.5
Hours Spent Studying
х
0.5 1 1.5 2 2.5 3 3.5 4 4.5
Hours Spent Studying
Spelling Scores vs. Hours Spent Studying
History Scores vs. Hours Spent Studying