既然是计算cumulative relative frequency,是不是可以直接用户 <4.77%的值个数/总个数 = 10/12= 0.833?
问题如下图:
选项:
A.
B.
C.
解释:
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. 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. 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