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Q.

The age-wise participation of students in the Annual Function of a school is shown in the following distribution.


Age (in years)

5-7

7-9

9-11

11-13

13-15

15-17

17-19

Frequency

x

15

18

30

50

48

x


The missing frequencies when the sum of frequencies is 181, is ____.


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Detailed Solution

The missing frequencies when the sum of frequencies is 181, is 10.
Given:

Age (in years)

5-7

7-9

9-11

11-13

13-15

15-17

17-19

Frequency

x

15

18

30

50

48

x

The Sum of frequencies is 181.
Therefore,
x+15+18+30+50+48+x=181 2x+161=181 2x=20 x=10  
Hence, the value of x is 10.
 
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