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Construct the frequency distribution table from the following cumulative frequency table and state the number of students in the age group 10-13.
Ages
No. of students
Below 4
0
Below 7
85
Below 10
140
Below 13
243
Below 16
300

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85

145

103

113

answer is C.

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Detailed Solution

It is given a table,

Ages	No. of students
Below 4	0
Below 7	85
Below 10	140
Below 13	243
Below 16	300

Frequency distribution table is

Class interval	Cummulative frequency
4-7	85
7-10	55
10-13	103
13-16	56

Number of students below age

10

140

and the number of students below age

13

243

.
Therefore number of students in the age group of

10 − 13

243 − 140 = 103

.
Hence option (3) is correct.

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