问题如下:
The annual returns for three portfolios are shown in the following table. Portfolios P and R were created in 2009, Portfolio Q in 2010.
The median annual return from portfolio creation to 2013 for:
选项:
A. Portfolio P is 4.5%.
B. Portfolio Q is 4.0%.
C. Portfolio R is higher than its arithmetic mean annual return.
解释:
C is correct.
The median of Portfolio R is higher than the mean for Portfolio R
麻烦可以解释一下这道题吗 不明白题目在干嘛