if rA > rM, can I think sigma A> sigma(risk higher, return higher) and then volatility A > volatility B

D WHY WELL-DIVERSIFIED HAS HIGHER UNSYSTEMATIC?

The proceeds are higher?这是什么意思？为什么选这个

自变量与残差项的相关系数是0是否就正确了呢？如果相关那不是有自相关性了吗？

视频上还没讲到normal distribution，还是不太懂95%怎么来的？

请问老师 价格与利率之间为什么有一个一百倍的关系呢

老师，第48题，S2为什么还在efficient frontier上，为什么不是在CML线上呢？有点儿混了。。。

Consider the following statements about bond reinvestment risk and bond duration (interest rate risk): I.Lower bond reinvestment implies higher interest rate risk (duration), ceteris Paribus (assuming other conditions unchanged). II.Due to reinvestment risk, the yield-to-maturity on a bond is unlikely to equal the bond’s realized return. III.Reinvestment risk is eliminated in a zero-coupon bond. Which of the above statements is true? A I and II B I and III C II and III D 老师，bond's realized return如何理解？它与ytm的关系？

老师好，这个题目中，为什么加杠杆后的S2点仍然在有效前沿曲线上？

请问老师，杨老师这里说的国债市场的报价规则是净价是不是说错了呀？加了ai不是全价吗？