The marks scored by 750 students in a examination are given in the form of a frequency distribution table:

Marks	No. of students	Marks	No. of students
600-640	16	760-800	172
640-680	45	800-840	59
680-720	156	840-880	18
720-760	284

Prepare a cumulative frequency table by less than method and draw an ogive.

Given:

The marks scored by 750 students in a examination are given in the form of a frequency distribution table.

To do:

We have to prepare a cumulative frequency table by less than method and draw an ogive.

Solution:

We first prepare the cumulative  frequency distribution table by less than method as given below:

Take marks along X-axis and number of students (c.f) along Y-axis.

Plot the points (640, 16), (680, 61), (720, 217), (760, 501), (800, 673), (840, 732) and (880, 750) on the graph and join them with a free hand. This is the required less than ogive.

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Updated on: 10-Oct-2022

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