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.
这种题目为什么可以不看下限呢
NO.PZ2018062016000041 问题如下 Peter invests a funanthe return of eayeis follows:Between 1.03% ≤ x 4.77%,the cumulative relative frequenwill be: A.0.083. B.1. C.0.833. 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？
NO.PZ2018062016000041 问题如下 Peter invests a funanthe return of eayeis follows:Between 1.03% ≤ x 4.77%,the cumulative relative frequenwill be: A.0.083. B.1. C.0.833. C is correct. 请问不用管下限的话，题目为何要提出下限的值呢？这是为了迷惑答题者吗？
NO.PZ2018062016000041 问题如下 Peter invests a funanthe return of eayeis follows:Between 1.03% ≤ x 4.77%,the cumulative relative frequenwill be: A.0.083. B.1. C.0.833. C is correct. 最小值为-8.19为何解答时最开始的值为-10.19呢
NO.PZ2018062016000041 问题如下 Peter invests a funanthe return of eayeis follows:Between 1.03% ≤ x 4.77%,the cumulative relative frequenwill be: A.0.083. B.1. C.0.833. C is correct. 按照题干给的区间得出BIN然后分段求每段frequence然后再求cumilater耗费时间有些长 有应对选择题的简易方式吗
