开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

花儿。 · 2023年04月05日

based on the coefficient of variation是题眼吗

NO.PZ2018062016000053

问题如下:

Given the table above, based on the coefficient of variation,which market is least risky?

选项:

A.

Hong Kong

B.

Australia

C.

Italy

解释:

B is correct. A market with lowest CV is the least risky one.

CV(Hong Kong)=20.28/9.2=2.20

CV(Australia)=19.2/10.3=1.86

CV(Italy)=14.72/6.5=2.26

如果没有cv的话,用标准差判断风险大小可以吗?还是说判断风险大小是一定要用cv?

1 个答案

星星_品职助教 · 2023年04月06日

同学你好, 这句话是解题的关键。正因为题干有这个限定,所以只能用CV来衡量,不能使用标准差。做其他题目时,也需要根据题目的实际要求,来选择具体用哪一种离散程度的衡量方式来做比较。

  • 1

    回答
  • 0

    关注
  • 328

    浏览
相关问题

NO.PZ2018062016000053 问题如下 Given the table above, baseon the coefficient of variation,whimarket is least risky? A.Hong Kong B.Australi C.Italy B is correct. A market with lowest is the least risky one.CV(Hong Kong)=20.28/9.2=2.20CV(Australia)=19.2/10.3=1.86CV(Italy)=14.72/6.5=2.26 = 标准差/平均我弄不清为什么\"标准差/平均\"会是\"数值越低风险越低\"?

2024-11-16 13:35 1 · 回答

NO.PZ2018062016000053 问题如下 Given the table above, baseon the coefficient of variation,whimarket is least risky? A.Hong Kong B.Australi C.Italy B is correct. A market with lowest is the least risky one.CV(Hong Kong)=20.28/9.2=2.20CV(Australia)=19.2/10.3=1.86CV(Italy)=14.72/6.5=2.26 这题我是用S/mean,先用标准差平方,再除以me得到结果为Italy,为什么不对?

2024-08-15 11:53 1 · 回答

NO.PZ2018062016000053问题如下 Given the table above, baseon the coefficient of variation,whimarket is least risky?A.Hong KongB.AustraliaC.ItalyB is correct. A market with lowest is the least risky one.CV(Hong Kong)=20.28/9.2=2.20CV(Australia)=19.2/10.3=1.86CV(Italy)=14.72/6.5=2.26​CV=标准差/平均数但是题目最右侧直接给了标准差啊,那这个平均数,怎么算呢?

2023-03-04 21:22 3 · 回答

NO.PZ2018062016000053 问题如下 Given the table above, baseon the coefficient of variation,whimarket is least risky? A.Hong Kong B.Australi C.Italy B is correct. A market with lowest is the least risky one.CV(Hong Kong)=20.28/9.2=2.20CV(Australia)=19.2/10.3=1.86CV(Italy)=14.72/6.5=2.26 CV的公式显示是要X100%,那么结果不应该是186.41%,220.43%,和226.46%吗?虽然不影响答题,但是想确认下。如果不用这样,那么乘100%的意义何在?

2022-09-02 15:35 1 · 回答