The marks scored by 750 students in an examination are given in the form of a frequency distribution table: Marks No. of Students 600-400 16 640-680 45 680-720 156 720-760 284 760-800 172 800-840 59 840-880 18 Prepare a cumulative frequency table by less than method and draw an ogive.

Question

Philoid · Accepted Answer

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

Marks	No. of students	Marks less than	Cumulative frequency
600-640	16	640	16
640-680	45	680	61
680-720	156	720	217
720-760	284	760	501
760-800	172	800	673
800-840	59	840	732
840-880	18	880	750

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)

Marks	No. of Students
600-400	16
640-680	45
680-720	156
720-760	284
760-800	172
800-840	59
840-880	18

The marks scored by 750 students in an examination are given in the form of a frequency distribution table:MarksNo. of Students600-40016640-68045680-720156720-760284760-800172800-84059840-88018Prepare a cumulative frequency table by less than method and draw an ogive.