问题如下:
Return is positive refers to yen appreciation and negative refers to yen depreciation. Compared to yen depreciation, yen appreciation is:
选项:
A. more frequent
B. less frequent.
C. the same frequent.
解释:
A is correct. .From the picture ,we can clearly know that positive return is more frequent.
1、为什么是看拐点,而不是像函数那样对应横坐标的每个收益率相加,比如1%的收益率对应的频数是n1这样 2、拐点是什么意思