第五题中，收入法公式GDP=S+I+T,这个公式讲义好像没有碰到过？

第三点，什么是好的市场，好像没有这部分的录像

correlation公式的含义是啥，为啥用covariance除以两个数的标准差就可以反映两个数的线性关系？理解有困难。。

03.单选题 收藏 标记 纠错 Under U.S. GAAP, a lessor's reported revenues at lease inception will be highest if the lease is classified as a(n): A sales-type lease. B operating lease. C direct financing lease.

debt/capital 是不是比 L/A更宽泛呢。如果是L/A，是不是意味着opening lease的费用不计入分子和分母了？

risk-adjusted return 是什么

06.单选题 收藏 标记 纠错 In practice, both a fixed parity regime and a target zone regime allow the exchange rate to float within a band around the parity level. Themost likely rationale for the band is that the band allows the monetary authority to: A be less active in the currency market. B earn a spread on its currency transactions. C exercise more discretion in monetary policy. 老师，麻烦帮我解析下这道题

A/R，周转率分母net revenue也是取平均值么？

Which one of the following statements about the covariance of returns for stock A and stock B is least likely accurate? A A Covariance ranges from negative infinity to positive infinity. B The covariance of return for stock A Ra with itself is equal to the standard deviation of Ra. C The covariance of returns for two stocks will be negative if the actual return on stock A is below its expected return, while the actual return on stock B is above its expected return at the same time. 老师您好，帮忙解析下这道题，这道题没读懂

15.单选题 收藏 标记 纠错 The manager of a pension fund determines that during the past five years 85 percent of the stocks in the portfolio have paid a dividend and 40 percent of the stocks have announced a stock split. If 95 percent of the stocks have paid a dividend and/or announced a stock split, the joint probability of a stock paying a dividend and announcing a stock split is closest to: