The following are the ages (in years) of some students.Prepare a table using tally marks and then draw pictograph using  1 __ For 2 students.

 

13 14 12 14 14 13 13 12 12 14

15 15 14 13 14 13 14 15 14 15

12 13 12 14 15 15 14 13 14 15

14 12 13 15