Jennifer Ducumon, CFA, is a portfolio manager for high-net-worth individu?als at Northeast Investment Bank. Northeast holds a large number of shares in Babyskin Care Inc., a manufacturer of baby care products. Northeast obtained the Babyskin shares when they underwrote the company’s recent IPO. Ducumon has been asked by the investment banking department to recommend Babyskin to her clients, who currently do not hold any shares in their portfolios. Although Ducumon has a favorable opinion of Babyskin, she does not consider the shares a buy at the IPO price nor at current price levels. According to the CFA Institute Code of Ethics and Standards of Professional Conduct the most appropriate action for Ducumon is to:Aignore the request.Brecommend the shares after additional analysis.Cfollow the request as soon as the share price declines. 老师您好，这个题有些读不明白，麻烦解析下

为什么加入p小于1的资产就降低组合风险，可能加入的资产本身方差极大，加入资产比例极高，也会导致整体风险上升，虽然加入资产与原资产协方差小于1。

GLS可以修正自相关吗？之前课程没提，说是AR模型可以修正

Current account盈余为什么capital account就会是赤字，有什么必然联系么。麻烦老师解释一下，谢谢

相关系数取值是正负1之间对吧，0无限性相关，正负1就是说是线性相关

这个例句老师是不是翻译错了？老师说的是，回购时市场价值大于账面价值，后面这个账面价值会降低，我的理解是，回购时市场价值小于账面价值，后面这个账面价值会降低，所以能否在这里解释一下括号里的实际意图是啥，看起来有点困惑，按照实际逻辑来说，回购是公司主体，所以对公司来说市场价低is greater，翻译成less没问题？

没见数量有讲啊

老师，想请教一下这道题是在哪里体现出它是一个单元回归，开R-square的平方根时需要判断正负号呢？题目里给的信息似乎没有说呀？谢谢老师！

老师，线性回归里,MSS的官方正确英文全称是什么？谢谢！

第十二题不是很明白，请老师指导，谢谢