Question

1. Use the information given in the adjoining histogram to construct a frequency table.
2. Use this table to construct an ogive.

 

Answer 1

a.

Class Interval	Frequency	c.f.
8 – 12	9	9
12 – 16	16	25
16 – 20	22	47
20 – 24	18	65
24 – 28	12	77
28 – 32	4	81

b. Now plot the points (12, 9), (16, 25), (20, 47), (24, 65), (28, 77), (32, 81) and join them to obtain an ogive.