题型:问答题 简答题 30. When he was only thirty years old, he had already experienced______most people only experience when they are much older.A.whatB.which C.whoD.When 查看答案
题型:问答题 简答题 用方差一协方差法计算VaR时,其基本假设之一是时间序列不相关。若某序列具有趋势特征,则真实VaR与采用方差协方差法计算得到的VaR相比( )。A.较大B.一样C.较小D.无法确定 查看答案