Question

4. The following table shows the cumulative frequency distribution of marks of 800 students in
an examination:
Below
Below
Below
Below
10
Below
20
Below
30
Below
40
Below
60
Below
80
Below
90
100
50
130
670
440
10
780
740
570
50
No. of students
270
(2 m)
Construct a frequency distribution table for the data above.​

Answer 1

Given : cumulative frequency distribution of marks of 800 students in

an examination:

Marks Number of students   CF

Below 10          10

Below 20 50

Below 30 130

Below 40 270

Below 50 440

Below 60 570

Below 70 670

Below 80 740

Below 90 780

Below 100 800

To Find :  a frequency distribution table

Solution

Marks Number of students

0-  10           10

10 -  20           40

20 -  30           80

30 -  40           140

40 -   50           170

50 -   60           130

60 -  70           100

70 -  80           70

80 -  90            40

90 -  100            20

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