Number of **** in six different classes are given below. Represent the data on a bar graph.
| class | Fifth | Sixth | Seventh | Eighth | Ninth | Tenth |
| no. of **** | 135 | 120 | 95 | 100 | 90 | 80 |
(a) How would you choose a scale?
(b) Answer the following questions:
(i) Which class has the maximum number of ****? And the minimum?
(ii) Find the ratio of students of class sixth to the students of class eighth.