The table below shows the daily expenditure on food of 25 households in a locality.

Daily expenditure ( in Rs ):	100-150	150-200	200-250	250-300	300-350
Number of households:	4	5	12	2	2

Find the mean daily expenditure on food by a suitable method."

Given:

The daily expenditure on the food of 25 households in a locality. 

To do:

We have to find the mean daily expenditure on food by a suitable method.

Solution:

Let the assumed mean be $A=225$.

Mean $=A+\frac{\sum{f_id_i}}{\sum{f_i}}$    

Therefore,  

Mean $=225+(\frac{-350}{25})$

$=225-14$

$=211$

The mean daily expenditure on food is Rs. 211.