Ans 15 th one............. .......................... .
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X. Ci F. Cf
10. 0-10 3. 3
12. 10-20 5. 8
14. 20-30 6. 14
16. 30-40 4. 18
18. 40-50 4. 22
20 50-60 3. 25
N=25
N/2=12.5
L=20
I=10
F=6
C=8
Median=l+n/2-c/f×i
20+12.5-8/6×10
20+4.5/6×10
20+45/6
20+7.5
27.5
Hope it will help you
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