Q. 24.5( 6 Votes )

The marks scored

Answer :

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

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)

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