飞不动的小仙女 · 2021年08月15日
NO.PZ2021061603000020
问题如下：
The annual returns for three portfolios are shown in the following exhibit.
Portfolios P and R were created in Year 1, Portfolio Q in Year 2.
The median annual return from portfolio creation to Year 5 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 0.8% higher than the mean for portfolio R.
这道题 portfolio R的median不是3么？NO.PZ2021061603000020问题如下 The annureturns for three portfolios are shown in the following exhibit.Portfolios P anR were createin Ye1, Portfolio Q in Ye2. The meannureturn from portfolio creation to Ye5 for: A.Portfolio P is 4.5%B.Portfolio Q is 4.0C.Portfolio R is higher thits arithmetic meannureturn C is correct. The meof Portfolio R is 3% higher ththe mefor portfolio R(2.2%）. 看了其他同学的问题解答 还是不理解 问题本身问的不是3个portfolio里第5年的中位数吗？以及具体怎么解题呢
NO.PZ2021061603000020 问题如下 The annureturns for three portfolios are shown in the following exhibit.Portfolios P anR were createin Ye1, Portfolio Q in Ye2. The meannureturn from portfolio creation to Ye5 for: A.Portfolio P is 4.5% B.Portfolio Q is 4.0 C.Portfolio R is higher thits arithmetic meannureturn C is correct. The meof Portfolio R is 3% higher ththe mefor portfolio R(2.2%）. 老师您好，请问到第五年时，年回报率的中值就是表中第五年的值嘛？好有点儿不太清楚，请老师解惑，谢谢老师The meannureturn from portfolio creation to Ye5 forportfolio P =7%portfolio Q=8%portfolio R=3%
