Question 6:

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:

To find the class mark (x_i) for each interval, the following relation is used.

Class size = 50

Taking 225 as assumed mean (a), d_i, u_i, f_iu_i are calculated as follows.

From the table, we obtain

Therefore, mean daily expenditure on food is Rs 211.

Latest Govt Job & Exam Updates:

View Full List ...