The marks scored by 750 students in an examination are given in the form of a frequency distribution table: Marks 600 - 400, 640 - 680

Question

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

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

Answer 1

Now we mark the upper class limits along x-axis and cumulative frequency along y-axis. 

Thus, 

we plot the points: (640,16); (680,61); (720,217); (760,501); (800,673); (840,732); (880,750)