Question

Using the data in ex.10, draw frequency polygon without drawing histogram.

Answer 1

Amount (in Rs)	Class Marks	Number of Students
20$-$30	25	4
30$-$40	35	7
40$-$50	45	8
50$-$60	55	6
60$-$70	65	9
70$-$80	75	10
80$-$90	85	5
90$-$100	95	1

The frequency polygon is given below: