摇一摇 · 2023年07月30日
NO.PZ2022123001000031
问题如下：
A fund had the following experience over the past 10 years:
The target semideviation of the returns over the 10 years if the target is 2% is closest to:
选项：
A.1.42%
B.1.50%
C.2.01%
解释：
The target semi-deviation is the square root of the sum of the squared deviations from the target, divided by n − 1:
题目中 哪里能看出要开根号呢
NO.PZ2022123001000031问题如下 Afunhthe following experienover the past 10 years:The target semiviation of the returns over the 10 years if the target is 2% is closest to: A.1.42%B.1.50%C.2.01% The target semi-viation is the square root of the sum of the squareviations from the target, vin − 1: 代入公式后得到（0.5%的平方+4%的平方+2%的平方）/9，然后再开方。想请问下，计算器计算上述式子中的分子（三个百分数的平方和）是什么按键顺序呢？ 我这边总是算出0.0025%。谢谢！
NO.PZ2022123001000031 问题如下 Afunhthe following experienover the past 10 years:The target semiviation of the returns over the 10 years if the target is 2% is closest to: A.1.42% B.1.50% C.2.01% The target semi-viation is the square root of the sum of the squareviations from the target, vin − 1:
NO.PZ2022123001000031问题如下 Afunhthe following experienover the past 10 years:The target semiviation of the returns over the 10 years if the target is 2% is closest to: A.1.42%B.1.50%C.2.01% The target semi-viation is the square root of the sum of the squareviations from the target, vin − 1: 这个表格右侧的三个数怎么算出来的，麻烦举个例子
NO.PZ2022123001000031 问题如下 Afunhthe following experienover the past 10 years:The target semiviation of the returns over the 10 years if the target is 2% is closest to: A.1.42% B.1.50% C.2.01% The target semi-viation is the square root of the sum of the squareviations from the target, vin − 1: 如题
