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Question

From the following data, find the median age of 100 residents of a colony who took part in Swachh Bharat Abhiyan:

Age(in yrs.) MoreNo. of residentsthan or equal to0501046204030204010503

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Solution

C.I.Frequencyc.f.010441020610203020303040104040507475060350

N2=502=25

Median class is 2030
Median =l+[h (N2c.f.)f]
=20+[10×(2510)20]=20+152=27.5


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