Q. 2

The daily expendi

Let us solve by direct method since the frequencies have smaller values.

This is grouped frequency distribution.

We shall represent them by creating a table having columns of class intervals, midpoints, frequencies, and product of these midpoints and frequencies.

So now, we have

fi = 50 and xifi = 7260

For grouped frequency distribution, mean is taken out from the formula:

[from the table]

Mean = 145.2

Thus, the mean daily expenditure of the students is Rs. 145.2.

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