慧笔 · 2020年02月26日
问题如下：
All else being equal, as the correlation between two assets approaches +1.0, the diversification benefits:
选项：
A.decrease.
B.stay the same.
C.increase.
解释：
A is correct.
As the correlation between two assets approaches +1, diversification benefits decrease. In other words, an increasingly positive correlation indicates an increasingly strong positive linear relationship and fewer diversification benefits.
correlaiton=1,代表是什么意思呢？（分母COV和分子标准差比值等于1）怎么才能理解透这个分散化收益下降呢？能否举个例子呢？
NO.PZ2017092702000071 问题如下 All else being equal, the correlation between two assets approaches +1.0, the versification benefits: A.crease. B.stthe same. C.increase. A is correct.the correlation between two assets approaches +1, versification benefits crease. In other wor, increasingly positive correlation incates increasingly strong positive linerelationship anfewer versification benefits.ρ越大，组合方差σp的平方就越大，也就是风险越大。所以根据题干描述，当ρ逐渐向+1增加时，分散化的效果会越来越差 这道题的意思是或， 在组合越分散的情况下， versification benefits 越大吗， 为什么呢？
NO.PZ2017092702000071问题如下All else being equal, the correlation between two assets approaches +1.0, the versification benefits:A.crease. B.stthe same. C.increase. A is correct.the correlation between two assets approaches +1, versification benefits crease. In other wor, increasingly positive correlation incates increasingly strong positive linerelationship anfewer versification benefits.ρ越大，组合方差σp的平方就越大，也就是风险越大。所以根据题干描述，当ρ逐渐向+1增加时，分散化的效果会越来越差 1.correlation=0,只代表非线性，不代表独立。2.但两者独立，代表非线性，=0。3.因为取值范围是-1到1,越靠近1，越强的线性关系，也就代表没有分散化的作用。
NO.PZ2017092702000071 问题如下 All else being equal, the correlation between two assets approaches +1.0, the versification benefits: A.crease. B.stthe same. C.increase. A is correct.the correlation between two assets approaches +1, versification benefits crease. In other wor, increasingly positive correlation incates increasingly strong positive linerelationship anfewer versification benefits.ρ越大，组合方差σp的平方就越大，也就是风险越大。所以根据题干描述，当ρ逐渐向+1增加时，分散化的效果会越来越差 老师 可以把方差标准差 correlation这些特殊符号给我分别打出来一下吗？还有其他会出现的特殊符号。我每次看见那些特殊符号都不知道什么是什么
NO.PZ2017092702000071问题如下All else being equal, the correlation between two assets approaches +1.0, the versification benefits:A.crease. B.stthe same. C.increase. A is correct.the correlation between two assets approaches +1, versification benefits crease. In other wor, increasingly positive correlation incates increasingly strong positive linerelationship anfewer versification benefits.ρ越大，组合方差σp的平方就越大，也就是风险越大。所以根据题干描述，当ρ逐渐向+1增加时，分散化的效果会越来越差 老师，Correlation不是-1和+1都是强线性吗？不是看绝对值判断离散强弱吗？为什么-1是最弱的离散情况？不应该是靠近0才是最弱的吗？
NO.PZ2017092702000071 stthe same. increase. A is correct. the correlation between two assets approaches +1, versification benefits crease. In other wor, increasingly positive correlation incates increasingly strong positive linerelationship anfewer versification benefits. ρ越大，组合方差σp的平方就越大，也就是风险越大。所以根据题干描述，当ρ逐渐向+1增加时，分散化的效果会越来越差 All else being equal啥意思啊，对解题有啥影响么
