Q. 54.6( 40 Votes )

AFLATOUN social a

Answer :

Given is the frequency distribution table for ungrouped data.

We have



To find arithmetic mean of school wise savings in each mandal,


A common formula is:



In ‘Amberpet’:



Mean = Rs 359


In ‘Thriumalgiri’:



Mean = Rs 413


In ‘Saidabad’:



Mean = Rs 195


In ‘Khairathabad’:



Mean = Rs 228


In ‘Secundrabad’:



Mean = Rs 200


In ‘Bahadurpura’:



Mean = Rs 837


For arithmetic mean of savings of all the school:


Mean of such ungrouped data is given by




Mean = 444


Thus, arithmetic mean of savings of all the schools is Rs 444.


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