Q5: option D says "Non-parametric is difficult to detect structural shifts or regime changes in data" but Dr. Liang said it should be because it's all reflected in the historical data. If so, it would make option D a wrong statement. Please advise the correct analysis of this statement being right as the answer suggested.

Q5: option D says "Non-parametric is difficult to detect structural shifts or regime changes in data" but Dr. Liang said it should be because it's all reflected in the historical data. If so, it would make option D a wrong statement. Please advise the correct analysis of this statement being right as the answer suggested.

我想问一下这个表格里t是单尾的，95%下的单尾不是0.05吗，为什么选0.25的？我感觉如果说双尾的话是选0.25

老师 请问这个会在考试范围里吗

51题，题目中写的是S 支付130本金给P，S应该是支130呀，为什么是收？

绿色这个式子什么意思？

定量百题中第31题，反复听解答还是有疑问。请问如果不用计算器该如何求样本方差？按照方差计算式用算数平均计算得出的答案和答案不一样。后面给的答案是用定义是算的算数平均，请问为何除以4，而不是5？

老师请问A选项红色括号里是什么意思跟债券有什么关系？

老师请问这道题选项B是不是无法确定

老师我想问下Bsm当中求call的公式里的k是指的执行价格还是债券价值？和平价公式里的K是不是不一样？