问题如下:
5 Based on Exhibit 2, the allocation effect for South America is closest to:
选项:
A.-0.04%
0.03%
0.20%
解释:
C is correct.
The allocation effect for South America is 0.20%.
Allocation = (wi – Wi)(Bi – B) = (20.38% – 18.82%)(35.26 – 22.67%) = 0.1964% = 0.20%
请问什么时候用 (wi – Wi)(Bi – B),什么时候用(wi – Wi) *B