The marks of a student in the different subjects for two term examinations are given in table. Draw the double bar graph from the following data. In which subject did the student improve his performance the most?
Class |
Fifth |
Sixth |
Seventh |
Eighth |
Ninth |
Number of children |
30 |
50 |
65 |
45 |
60 |
(i) Find the ratio of students of class sixth to the students of class ninth.
(ii) What is the difference in the number of students of class fifth and class eighth?