求问23题怎么做

老师 到底聚类和分类有什么不同？这道题为什么不选A我百思不得其解 谢谢

这道题是不是题目有问题，算出来的答案跟参考答案对不上，明显第一栏的t检验的结果应该是-4.2

请问选项C为什么不对，这也是课件上的原话吧。

An analyst at Bergman International Bank has been asked to explain the calculation of VaR for linear derivatives to the newly hired junior analysts. Which of the following statements best describes the calculation of VaR for a linear derivative on the S&P 500 Index? A、For a futures contract, multiply the VaR of the S&P 500 Index by a sensitivity factor reflecting the percent change in the value of the futures contract for a 1% change in the index value. 答案：A 解析：calculate the VaR for a linear derivative: VaRp = ∆ * VaRf The delta in the formula is a sensitivity factor that reflects the change in value of the derivatives contract for a given change in the value of the underlying. “The delta adjustment to the VaR of the underlying asset accounts for the fact that the relative changes in value between the underlying and the derivatives may not be one for one but nevertheless然而 are linear in nature. Note that options are non-linear.“，老师请问引号内这段话要怎么理解

quoted price 不是104.75 吗？为什么后面还要除100*面值

黄色高亮部分何解 在价格公式中如何体现？

这道题如果A的期限是9个月，B的期限是6个月该怎么选择？我记得以前有一道题，相关性高的期限短不能覆盖，相关性低的期限长能覆盖，让我们选。在相关性和期限之间如果要选择该怎么选？

这道题不是让选基差风险最大的合约吗？为什么老师一边说原油短期合约价格波动大，basis大，一边又反复说A最合理？这道题如果让选择一个最合适的对冲策略应该选哪个？

老师，如果计算器在输入数字时，只输错了一个数字，怎么修改啊可以不用重新输入？比如2.4输成了2.3