ditto · 2020年03月14日
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NO.PZ2018062016000044问题如下Return is positive refers to yen appreciation annegative refers to yen preciation. Compareto yen preciation, yen appreciation is:A.more frequentB.less frequent.C.the same frequent. A is correct. .From the picture ,we cclearly know thpositive return is more frequent.这道题问的是日元升值和贬值的次数哪个多。纵轴是频次（Frequency），横轴是“return intervmioint”，所以每个值对应的都是return这个区间的中点。以1.0%为例，对应的区间就是0%-2%；3.0%对应的区间就是2%-4%，以此类推。根据题干可知，return＞0%对应日元升值，反之return＜0%对应日元贬值（Return is positive refers to yen appreciation annegative refers to yen preciation）。通过图像可以看出，return＞0%的情况为1.0%对应的frequency（20），和3.0%对应的frequency（6）。总频次一共是20+6=26。而贬值时的情况为-5.0%对应的3，-3.0%对应的8，和-1.0%对应的11，总频次为22。所以日元升值的频率更高（26＞22），选择Return is positive refers to yen appreciation annegative refers to yen preciation.如果题目不给这句话，怎么判断呢？图片中是llar/yen，是不是可以理解为大于0就是yen贬值呢？
NO.PZ2018062016000044 这个图
NO.PZ2018062016000044 怎么算的正数、负数，上升下降、频率？
是否可以用negative skewe来判断？
