Q. 64.4( 195 Votes )

The table below shows the daily expenditure on food of 25 households in a locality
Find the mean daily expenditure on food by a suitable method

Answer :

Solving by short-cut method:
The above given data can be represented in the form of table as below:

Formula of mean is given by

where, a = assumed mean
fi = frequency of the ith class
h = class width 




= Rs. 211
So, the mean of the data is Rs. 211

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