1.

The following table gives the distribution of students of two sectionsthe marks obtained by them:according toSection BSection AMarksFrequencyMarksFrequeney0-1010-2020-3030-4040-500-1010-2020-3030-4040-501915101712Dr9. 10disasRepresent the marks of the students of both the sections on the same graph by twofrequency polygons. From the two polygons compare the performance of the twosections

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