(17)What is a composite (weighted) index for housing construction costs in 2014 using the following data?
(a) 153.5 (b) 253.5 (c) 353.5 (d) 453.5
Solution:
We will find the composite index for housing constructions costs in 2014.
Following given Formula we calculate the value.
index = summation of new prices * base index/summation of old prices -----(1)
Suppose index value is 100 the percent given are the weights.
So,
summation of new prices = 70 *62+5*57+25* 53
= 4200+285+1325
= 5950
summation of before prices = 70*41 + 5*38 + 25 *33
= 2870+190+825
= 3885
Submit these values in (1)
index = 5950 * 100 / 3885
= 595000/3885
= 153.153.
Therefore, Option (a) is the answer from the given question.
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