性别: 年龄: 49 加入时间: 2007/01/17 文章: 21 来自: Los Angeles 海归分: 3889
Geometric Average Return = [(1+r1)(1+r2)..(1+rn)]^(1/n) - 1
by examing this rate on a long period of time, you will get more idea about the "true performance"
in your example above, the total geometric return is (1+9)(1-0.5) = 5
also your post assumes that high growth rate is easier to obtain on small base, to extent this is true. But remember with 10 USD you won't be able to establish a "fund"