Given below is a cumulative frequency table:

Marks Number of students

Below 10 17

Below 20 22

Below 30 29

Below 40 37

Below 50 50

Below 60 60

Extract a frequency table from the above.

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Solution

The frequency table can be presented as given below:

Marks Number of students

0-10 17

10-20 5

20-30 7

30-40 8

40-50 13

50-60 10

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Similar questions

Given below is a cumulative frequency table:
$\begin{matrix} Marks & Number of students Below 10 & 17 Below 20 & 22 Below 30 & 29 Below 40 & 37 Below 50 & 50 Below 60 & 60 \end{matrix}$
Extaract a frequency table from the above.

Q. Find the mi9ssing frequency from the followinjg table:

Marks	No. of Students
Below 10	25
Below 20	40
Below 30	60
Below 40	75
Below 50	95
Below 60	125
Below 70	190
Below 80	240

Q. Draw the less-than type cumulative frequency curve and find the median from the following table.

Marks scored	below 20	below 40	below 60	below 80	below 100
Number of students	6	10	20	36	50

The following table gives the marks obtained by the students of a class in an exam out of 50.

$\begin{matrix} Marks & No. of Students B e l o w 10 & 5 B e l o w 20 & 10 B e l o w 30 & 23 B e l o w 40 & 31 B e l o w 50 & 40 \end{matrix}$

(i) Convert the cumulative frequency distribution into a regular frequency distribution.

(ii) Find the mean. [3 MARKS]

For the following distribution, the modal class is

$\begin{matrix} M a r k s & N u m b e r o f s t u d e n t s B e l o w 10 & 3 B e l o w 20 & 12 B e l o w 30 & 27 B e l o w 40 & 57 B e l o w 50 & 75 B e l o w 60 & 80 \end{matrix}$

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Marks	Number of students
0-10	17
10-20	5
20-30	7
30-40	8
40-50	13
50-60	10

Given below is a cumulative frequency table: Marks Number of students Below 10 17 Below 20 22 Below 30 29 Below 40 37 Below 50 50 Below 60 60 Extract a frequency table from the above.

The frequency table can be presented as given below: Marks Number of students 0-10 17 10-20 5 20-30 7 30-40 8 40-50 13 50-60 10

Given below is a cumulative frequency table:

Marks Number of students

Below 10 17

Below 20 22

Below 30 29

Below 40 37

Below 50 50

Below 60 60

Extract a frequency table from the above.

The frequency table can be presented as given below:

Marks Number of students

0-10 17

10-20 5

20-30 7

30-40 8

40-50 13

50-60 10