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鱼子 · 2025年06月16日

NO.2024021801000048

答案判断及提示不正确
1 个答案

净净_品职助教 · 2025年06月16日

嗨,爱思考的PZer你好:


ESG评级结果的相关性很低,但仍然为正相关。

相关性这个指标用ρ来表示,ρ的取值为[-1,1],当ρ=0,代表不相关;当ρ>0,代表正相关。根据教材中提到的几项研究,ESG评级结果的相关性大概再0.2~0.5之间,属于正相关,但是相关性较低,当ρ取值越接近于1或者-1时,相关性越强。

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2025-05-19 08:48 1 · 回答

NO.PZ2024021801000048 问题如下 The ESG rating correlation among fferent ta provirs is most likely: A.negatively correlate B.uncorrelate C.positively correlate Correbecause one challenge is ththe agreement or correlation between the various ratings agencies is low. A stu Chatterji al. fin approximate 0.3 correlation. (Or more technically, this analysis founpairwise tetrachoric correlations for three years among the six raters, with a mecorrelation of 0.30 (about 2 stanrviations). However, this also inclusome negative ones’ correlations, meaning whone rater founresponsible another foun‘irresponsible’.) A 2019 stu Gibson et al. shows a range of correlations. Yet another stu Berg et al. shows a range of correlations well: Berg looks a taset of ESG ratings from six fferent raters – namely, KL(MSStats), Sustainalytics, Vigeo Eiris (Moo’s), RobecoS(S P Global), Asset4 (Refinitiv) anMS– the correlations between the ratings are on average 0.54 anrange from 0.38 to 0.71. Table 7.4 presents 4 categories of correlations ranging from 0.2 to 0.46. 不同数据提供者之间的ESG评级相关性低,不应该选A吗?

2025-04-21 21:53 1 · 回答

错误

2025-03-06 16:20 1 · 回答

NO.PZ2024021801000048 问题如下 The ESG rating correlation among fferent ta provirs is most likely: A.negatively correlate B.uncorrelate C.positively correlate Correbecause one challenge is ththe agreement or correlation between the various ratings agencies is low. A stu Chatterji al. fin approximate 0.3 correlation. (Or more technically, this analysis founpairwise tetrachoric correlations for three years among the six raters, with a mecorrelation of 0.30 (about 2 stanrviations). However, this also inclusome negative ones’ correlations, meaning whone rater founresponsible another foun‘irresponsible’.) A 2019 stu Gibson et al. shows a range of correlations. Yet another stu Berg et al. shows a range of correlations well: Berg looks a taset of ESG ratings from six fferent raters – namely, KL(MSStats), Sustainalytics, Vigeo Eiris (Moo’s), RobecoS(S P Global), Asset4 (Refinitiv) anMS– the correlations between the ratings are on average 0.54 anrange from 0.38 to 0.71. Table 7.4 presents 4 categories of correlations ranging from 0.2 to 0.46. ththe agreement or correlation between the various ratings agencies is low低相关性,换个说法,不是应该用negtively correlation?为什么答案选postivitely,不理解

2024-12-03 16:19 1 · 回答