The following table gives the distribution of students of two sections according to the marks obtained by them:

Section A

Section B

Marks

Frequency

Marks

Frequency

0–10

3

0–10

5

10–20

9

10–20

19

20–30

17

20–30

15

30–40

12

30–40

10

40–50

9

40–50

1

Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the two sections.

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