Q1 of 47 Page 86

For a month, a family requires the commodities listed in the table below. The weight to each commodity is given. Find the Weighted Arithmetic Mean.

GIVEN:


FORMULA USED: Weighted Arithmetic mean


=


Let price of items be x


And weight of items be frequency w



∑w = 25 + 5 + 4 + 8 + 3


= 45


∑xf = 750 + 100 + 240 + 200 + 195


= 1485


Weighted arithmetic mean =


Arithmetic mean = = 33


CONCLUSION: Weighted arithmetic mean of given data is Rs33


More from this chapter

All 47 →
1

Obtain the A.M of the following data:

 1

The following table shows the weights of12 workers in a factory


Find the mean weight of the workers.

 1

Find the Weighted Arithmetic Mean for the following data:

 2

Find the median of the following set of values:

(i) 83, 66, 86, 30, 81.


(ii) 45, 49, 46, 44, 38, 37, 55, 51.


(iii) 70, 71, 70, 68, 67, 69, 70.


(iv) 51, 55, 46, 47, 53, 55, 51, 46.