郭大路 · 2020年09月12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.
是否可以用negative skewed 来判断？
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？
less frequent. the same frequent. A is correct. .From the picture ,we cclearly know thpositive 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
