问题如下图:
选项:
A.
B.
C.
解释:
如何理解该题,麻烦解答
Shimin_CPA税法主讲、CFA教研 · 2019年03月03日
首先要看懂题干的表格,一共有3个资产。根据题意,一共有三种情况,每种情况发生概率相同,即发生概率都是1/3。每个资产在不同情况下会产生不同的收益。比如资产1,在第一种情况下,产生的收益率为12%;资产2,在第一种情况下,产生的收益率也是12%;资产3,在第一种情况下,产生的收益率是0%。观察表格发现,三种资产产生的收益率不外乎12%,6%,0%,所以正如表格最后一列所示,这三种资产的预期收益率都是6%(=1/3*12%+1/3*6%+1/3*0%)。
接下来,题目问的是哪对资产组合后风险减小是最小的。其实要问的就是,哪对资产组合后分散化效果是最差的。那么根据资产组合标准差的公式,要找哪两对资产收益率的相关性系数是最大的。
相关性系数反映的是两组数据变化的同步性,这里就可以用到计算器了。以A选项资产1、资产2的收益率相关性系数计算为例,打开金融计算器:[2nd][7]进入data模式,依次输入X01=12,Y01=12;X02=0,Y02=6;X03=6,Y03=0,然后[2nd][8]进入STAT模式,一直按下箭头,直到屏幕出现r=,算出来是0.5。说明两组数据的相关性系数=0.5。同理,可以计算出资产1、资产3收益率的相关性系数为-0.5,资产2、3的相关性系数为-1。最终,选择相关性系数最大的两组资产,那就是A选项了。
NO.PZ2015121801000068 问题如下 analyst hma the following return projections for eaof three possible outcomes with equlikelihooof occurrence:If the analyst constructs two-asset portfolios thare equally weighte whipair of assets provis the least amount of risk rection? A.Asset 1 anAsset 2. B.Asset 1 anAsset 3. C.Asset 2 anAsset 3. is correct.equally weighteportfolio of Asset 1 anAsset 2 hthe highest level of volatility of the three pairs. All three pairs have the same expectereturn; however, the portfolio of Asset 1 anAsset 2 provis the least amount of risk rection. 我用计算器算出来1 2的r=0.5,1 3的r=-0.5,为什么是选择0.5而不是-0.5
NO.PZ2015121801000068问题如下analyst hma the following return projections for eaof three possible outcomes with equlikelihooof occurrence:If the analyst constructs two-asset portfolios thare equally weighte whipair of assets provis the least amount of risk rection?A.Asset 1 anAsset 2.B.Asset 1 anAsset 3.C.Asset 2 anAsset 3.is correct.equally weighteportfolio of Asset 1 anAsset 2 hthe highest level of volatility of the three pairs. All three pairs have the same expectereturn; however, the portfolio of Asset 1 anAsset 2 provis the least amount of risk rection.这个题怎么判断risk ction 用计算器的话
NO.PZ2015121801000068 问题如下 analyst hma the following return projections for eaof three possible outcomes with equlikelihooof occurrence:If the analyst constructs two-asset portfolios thare equally weighte whipair of assets provis the least amount of risk rection? A.Asset 1 anAsset 2. B.Asset 1 anAsset 3. C.Asset 2 anAsset 3. is correct.equally weighteportfolio of Asset 1 anAsset 2 hthe highest level of volatility of the three pairs. All three pairs have the same expectereturn; however, the portfolio of Asset 1 anAsset 2 provis the least amount of risk rection. 2资产取最大的时候3取最小,为什么2和3 不对呢
NO.PZ2015121801000068 问题如下 analyst hma the following return projections for eaof three possible outcomes with equlikelihooof occurrence:If the analyst constructs two-asset portfolios thare equally weighte whipair of assets provis the least amount of risk rection? A.Asset 1 anAsset 2. B.Asset 1 anAsset 3. C.Asset 2 anAsset 3. is correct.equally weighteportfolio of Asset 1 anAsset 2 hthe highest level of volatility of the three pairs. All three pairs have the same expectereturn; however, the portfolio of Asset 1 anAsset 2 provis the least amount of risk rection. 这题也是求组合的相关系数r对吧?相关性越大,越不能rerisk
NO.PZ2015121801000068问题如下analyst hma the following return projections for eaof three possible outcomes with equlikelihooof occurrence:If the analyst constructs two-asset portfolios thare equally weighte whipair of assets provis the least amount of risk rection?A.Asset 1 anAsset 2.B.Asset 1 anAsset 3.C.Asset 2 anAsset 3.is correct.equally weighteportfolio of Asset 1 anAsset 2 hthe highest level of volatility of the three pairs. All three pairs have the same expectereturn; however, the portfolio of Asset 1 anAsset 2 provis the least amount of risk rection.[2n[7]进入ta模式,依次输入X01=12,Y01=12;X02=0,Y02=6;X03=6,Y03=0,然后[2n[8]进入STAT模式,出现1-V,然后按向下箭头,就出现error提示了,请问这是怎么回事啊?