NO.PZ2015122802000050
问题如下:
An analyst gathers the following data for a value-weighted index:
The return on the value-weighted index over the period is:
选项:
A.
7.1%.
B.
11.0%.
C.
21.4%.
解释:
B is correct.
It is the percentage change in the market value over the period:
Market value at beginning of period: (20 × 300) + (50 × 300) + (26 × 2,000) = 73,000
Market value at end of period: (22 × 300) + (48 × 300) + (30 × 2,000) = 81,000
Percentage change is 81,000/73,000 – 1 = 0.1096 or 11.0 percent with rounding.
考点:市值加权的指数
1、value-weighted index就是market-capitalization weighting市值加权的意思。
2、很多同学问为何上述计算要“减 1”。我们现在要求的是收益率,81000-73000=8000才是收益,所以收益率等于8000/73000=11%,因此上述公式需要减掉1。
什么时候用(期末总值-期初总值)/期初总值 什么时候用(期末总值/期初总值)-1算啊 我好晕