财务分析里rent为什么算SG&A不算COGS? 租用厂房不是和生产直接相关么？还有utility,生产车间的电费不是也和生产直接相关么？谢谢

请问协方差平稳到底是什么意思？ 怎么去理解？

老师您好，我想问一下，就是积极风险。。。 我感觉可以和capm进行类比。如下： 在capm模型中，我们是无风险资产。那么对应这里就应该是基准组合。。。 在capm模型中，我们的横坐标是系统性风险，那么对应的横坐标就是积极风险。 于是，我想问的是，capm模型中的是市场组合，那么这里是什么呢？难道是积极管理的投资组合吗？这个东西是会变的呀？但是capm模型中的市场组合是不变的呀。 请老师解答，并麻烦您能够再对比一下，这两个地方吗？

FAR合成，下面分解的第一部分long270天的是买入的现金还是合约

老师您好, 下图是题目信息. 问题1: 有个选项的解释说: F-statistic in Exhibit 2 confirms this lack of explanatory power. 我想请问下这个怎么看? 我不是太明白这个 问题2: Significance of F 是指什么? 谢谢!

55-34请讲解

55-42这道题根据排除法得到了正确答案C，但是根据已知条件结合课后答案，没看出来这个指标具体的代入数字是怎么得来的，请解答

老师，在运用Par=Vfixed时，不用管0时刻吗？可是只有0时刻，Vfloating=V fixed吧…

Hello, instructor. I do not understand the meaning of the sentence that "coefficient of determination measures the fraction of the total variation in the dependent variable that is explained by the independent variable". could you please explain again? Thanks.

12. Trumpit Resorts Company currently has 1.2 million common shares of stock outstanding and the stock has a beta of 2.2. It also has $10 million face value of bonds that have five years remaining to maturity and 8 percent coupon with semi-annual payments, and are priced to yield 13.65 percent. If Trumpit issues up to $2.5 million of new bonds, the bonds will be priced at par and have a yield of 13.65 percent; if it issues bonds beyond $2.5 million, the expected yield on the entire issuance will be 16 percent.。Trumpit has learned that it can issue new common stock at $10 a share. The current risk-free rate of interest is 3 percent and the expected market return is 10 percent. Trumpit’s marginal tax rate is 30 percent. If Trumpit raises $7.5 million of new capital while maintaining the same debt-to-equity ratio, its weighted average cost of capital is closest to: A. 14.5 percent. B. 15.5 percent. C. 16.5 percent. 麻烦老师帮忙讲解一下，谢谢！