Q. 63.8( 17 Votes )

The marks obtained by 40 students of a class in an examination are given below.

3, 20, 13, 1, 21, 13, 3, 23, 16, 13, 18, 12, 5, 12, 5, 24, 9, 2, 7, 18, 20, 3, 10, 12, 7, 18, 2, 5, 7, 10, 16, 8, 16, 17, 8, 23, 24, 6, 23, 15.

Present the data in the form of a frequency distribution using equal class size, one such class being 10 – 15 (15 not included).

Answer :

Minimum observation = 1


Maximum observation = 24


The classes of equal size covering the given data are:


0-5, 5-10, 10-20, 20-25


So, frequency distribution table will be as given below,



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