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寒塘鹤影 · 2022年02月01日

0到-1表示相关性不是越来越强了么?

NO.PZ2018062016000071

问题如下:

When the correlation between two stocks decreases from 0 to -1, the diversification benefit will:

选项:

A.

increase.

B.

decrease.

C.

remain the same.

解释:

A is correct. As the correlation between two stocks decreases, diversification effect may enhance and diversification benefit will increase.

0到-1表示相关性不是越来越强了么?分散效果不是越来越差了么?分散化的benifit不是要求相关系数的绝对值约小benifit越大么?

1 个答案
已采纳答案

星星_品职助教 · 2022年02月01日

同学你好,

分散化的结论为:相关系数从+1降低到-1,分散化的效果越来越好,其中-1的分散化效果最好,+1的分散化效果最差。

相关系数的绝对值只能表示相关性的大小,不能看出是正相关还是负相关,也就不能表示分散效果。

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