Data Handling

The marks obtained (out of 20) by 30 students of a class in a test are
as follows:
14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10,
13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20.
Prepare a frequency distribution table for the above data using class
intervals of equal width in which one class interval is 4 –8 (excluding
8 and including 4).