Question

2 points
Calculate the weighted
Airthmetic mean for the
following data: Group: Food
Clothing Fuel House Rent,
Misc. X: 125, 133, 141, 173, 182.
W:7,5, 4, 1, 3*
O Weighted A. M = 114.51
O Weighted A. M = 114.15
O Weighted A. M = 141.51
O Weighted A. M = 141.15​

Answer 1

Explanation:

Following is the monthly income of eight families in a locality

Monthly Income (₹) : 70, 10, 500, 75, 13, 250, 8, 42

Find out arithmetic mean using Direct Method and Short-cut Method.

ANSWER:

Families

Monthly income

(X)

Deviation from the Assumed average

(d = X − A) (A = 75)

1

2

3

4

5

6

7

8 70

10

500

75 (A)

13

250

8

42 −5

−65

425

0

−62

175

−67

−33

(N) = 8

(ΣX)=968 Σd = −232 + 600