问题如下:
An analyst gathers the following data for a price-weighted index:
The price return of the index over the period is:
选项:
A.4.2%.
B.7.1%.
C.21.4%.
解释:
A is correct.
The sum of prices at the beginning of the period is 96; the sum at the end of the period is 100. Regardless of the divisor, the price return is 100/96 – 1 = 0.042 or 4.2 percent.
什么时候用(期末价格之和除以期初价格只和)-1;什么时候用计算每个(期末价格-期初价格)/期初价格加权平均?