NO.PZ2018062016000041
问题如下:
Peter invests a fund and the return of each year is as follows:
Between 1.03% ≤ x <4.77%,the cumulative relative frequency will be:
选项:
A.0.083.
B.1.
C.0.833.
解释:
C is correct.
我所理解的题目是计算:本题所给的区间在全部数值中的比例,但很显然,这题的答案给的是最右端数值之下所有数字的累积,类似于一个左开右闭的区间累积?(大概这样的感觉),那这个区间值给的含义也就只有右边有用了?所以在这种cumulative frequency的情况下,我们只用看最高值的单边?