Question

Draw less than ogive

Answer 1

weight in kg no of students
(class interval)
36-38
38-40
40-42
42-44
44-46
46-48
48-50
50-52

number of students
( frequency)
0
3
5
9
14
28
32
35

cf
0
0+3=3
3+5=8
8+9=17
17+14=31
31+28=58
59+32=91
91+35=126

now you can plot the graph.