|
In probability theory, the tail dependence of a pair of random variables describes their comovements in the tails of the distributions. It is a stylized fact of stock returns that they commonly exhibit tail dependence. ==Definition== The lower tail dependence is defined as : where , that is, the inverse distribution function for ''q''. The upper tail dependence is defined analogously as : 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Tail dependence」の詳細全文を読む スポンサード リンク
|