NO.PZ2020020202000026
问题如下：
What is the total interaction effect under the Brinson Model?
选项：
A.
0.2%
B.
–0.6%
C.
–0.8%
解释：
C is correct.
Individual interaction effect by sector is:
Real Estate: (30% – 40%) × (16% – 12%) = –0.4%Health care: (40% – 20%) ×[ (–13%） –（ –10%)] = –0.6%Consumer Durables: (30% – 40%) × (8% – 10%) = 0.2%
Total interaction effect is –0.4% + –0.6% + 0.2% = –0.8%
是brinson 会分成bhb和bf model对吗，如果算allocation effect不说是哪一个model就看题目给到什么条件吗
