NO.PZ202106160300001201
问题如下：
The bin containing the median return is:
选项：
A.3% to 8% B.8% to 13% C.13% to 18%解释：
C is correct. Because 50 data points are in the histogram, the median return would be the mean of the 50/2 = 25th and (50 + 2)/2 = 26th positions. The sum of the return bin frequencies to the left of the 13% to 18% interval is 24. As a result, the 25th and 26th returns will fall in the 13% to 18% interval.
老师，这类题能否展开讲讲？
另外，回答上一个问题时，回复“纵轴代表发生的次数。根据纵轴依次数过去，可以知道无论是第25还是第26个return，都处在13%-18%的这个bin里”，这里怎么看出25和26return在这个bin里的？纵轴单位怎样看的？
谢谢
