老师，那days sales outsdanting和average receivable collection period是一个意思？

R22原版书例题12第3问答案第二句，short call 获得的期权费，不应该在一开始就得到吗，答案为什么是until option expire

原版书31页，step5中，S(b^1)的算式为什么是√(mean square errer)/√(variation of  CAPEX)即3.459588/√122.640？这个计算公示是如何推导的？

这道题没有视频解析啊，文字的解析没看懂

这道题的知识点在讲义的哪里啊？

官网题：While the buy-side trader executes the BYYP trade, Harding and Yellow review ValleyRise's trade policy document. After reviewing the document, Yellow recommends several changes: 1) add a policy for the treatment of trade errors; 2) add a policy that ensures over-the-counter derivatives are traded on venues with rules that ensure minimum price transparency; and 3) alter the list of eligible brokers to include only those that provide execution at the lowest possible trading cost. Q. As it relates to the trade policy document, ValleyRise should implement Yellow's recommendation related to: A. the list of eligible brokers. B. a policy for the treatment of trade errors. C. a policy for over-the-counter derivatives trades. 这道题请问A和C为什么不对？

是不是可以理解为，只有数字才能以表格呈现，才是结构化数据？

这道题确实非常confusing，我看了半天没搞懂 investing in new investment和 investing with maximum flexibility哪个是不断evolve的，我判断是mm更适合因为new investment应该是更不能predict的啊

它这个思路怎么有点别扭，我觉得逻辑是“正因为收入比上一期多了，才要去怀疑它有偏差的”，这样理解错在哪里了

1/2前面那一半为什么可以不算？是数字很小可以忽略吗？