NO.PZ202212270100001901
问题如下：
Based on Exhibit 2, the allocation effect for South America is closest to:
选项：
A.–0.04%.
0.03%.
0.20%.
解释：
Correct Answer: C
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%
这道题用的是BF model，想请教一下怎么知道什么时候要用BF or BHB？
