习题集317，D，请问在goodtime时，value stock表现好于growth stock，那么在bad time 时呢？

习题集316题，B为什么错了？没看懂

习题集314题，C选项请问错在哪里？price at risk是指什么

请问这种巴塞尔2的T1和T2需要记吗，不是说只要记巴塞尔三吗？

老师请问为什么在正常情况下石油与天然气的期货价格小于现货价格

为什么老师的答案不加2.5的CB？什么时候需要加2.5什么时候不需要加？

Sortino ratio calculation: MAR is pre-setted, not the kind of mean of sampl, MAR WILL NOT alter the degree of freedom, why the denominator has the way to get the deviation as the samplling deviation computation? The function should be wrong, IF no return is below the MAR, whta is meaning of the function? sum o to o, makes no sense to the function. so, T sould be sums from 1, not zero, to a certain count. thanks!

Sortino ratio calculation: MAR is pre-setted, not the kind of mean of sampl, MAR WILL NOT alter the degree of freedom, why the denominator has the way to get the deviation as the samplling deviation computation?

这道题的c选项如何理解呢？解析划横线的部分怎么理解呢？

请问为什么floater的duration是0？