Math, asked by tiwariagrim7, 4 months ago

Find the median

CI |. f. |
|. |
0-20. |. 15. |
20-10. |. 18. |
10-60. |. 21. |
60-80. |. 20. |
80-100. |. 26. |​

Answers

Answered by subhsamavartj
2

Answer:

Step-by-step explanation:

ClassInterval  Frequency  c.f.  

0−20  6  6  

20−40  8  14  

40−60  10  24  

60−80  12  36  

80−100  6  42  

100−120  5  47  

120−140  3  50  

 N=50    

Here, N=50, then  

2

N

​  

=  

2

50

​  

=25

∴  Median class =60−80

We have, l=60,c.f=24,f=12 and h=20

Median=l+  

f

2

N

​  

−c.f

​  

×h

               =60+  

12

25−24

​  

×20

               =60+1.66

               =61.66

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