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Number of Students 5 15 32 25 15 8

Solution:

Marks Number of Students(f) Cumulative frequency

50-60 5 5
40-50 15 20(5+15)
30-40 32 52(20+32)

20-30 25 77(52+25)
10-20 15 92(77+15)
0-10 8 100(92+8)

Total N = 100

Types of Cumulative Frequency Distribution:

1.Less than type cumulative frequency distribution

2.More than type cumulative frequency distribution

Example-5:Make a less than type and more than type cumulative frequency table

Marks Frequency
0 - 10 4
10 - 20 16
20 - 30 20

30 - 40 10
40 - 50 7
50 - 60 3

Less than type cumulative frequency distribution
Marks Number of Students
Less than 10 4
Less than 20 20(4+16)
Less than 30 40(20+20)
Less than 40 50(40+10)
Less than 50 57(50+7)
Less than 60 60(57+3)

More than type cumulative frequency distribution
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