Question

Draw the frequency polygon for the following frequency distribution :

Class	Frequency
10 - 20	02
20 - 30	08
30 - 40	10
40 - 50	05
50 - 60	04

Answer 1

Class	Class mark	Frequency	Points
0-10	5	0	(5,0)
10-20	15	2	(15,2)
20-30	25	8	(25,8)
30-40	35	10	(35,10)
40-50	45	5	(45,5)
50-60	55	4	(55,4)
60-70	65	0	(65,0)