standard-deviationCOCA³¹⁵¹¹¹⁺⁴ 基本例句 na.统标准偏差;🌏标准差 Then again, the move in energy prices that caused the collapse last year of Amaranth, the hedge fund, was a nine standard-deviation event. 其实历史早在去年就上演过一次,能源价格的变动导致了对冲基金 Amaranth的破产,当时 Vix的涨幅达到了900点。 ecocn