pls solve this sum pls
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Answer:
5
Step-by-step explanation:
Given,
Class interval frequency cumulitative frequency
0−10 2 2
10−20 3 5
20−30 x 5+x
30−40 6 11+x
40−50 5 16+x
50−60 3 19+x
60−70 2 21+x
Total frequency= 21+x
=> N=21+x
=> N / 2 = (21+x) / 2
So, CF corresponding to this is 11+x
And class corresponds to this is 30−40
So, l=30 , F=5+x , f=6 and h=10
Median = l + [({N/2}-F)/f] * h
35 = 30 + ([21+x/2] - 5 - x) / 6 ) * 10
Solving this, we get x = 5
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